Have my number of arrows correspond to arrows in my inventory

Hello.

Fairly new to coding so I'm really struggling how to code this. I have followed a youtube tutorial to get a whole inventory system working in my game. I've also added a bow and arrow that can fire arrows, it has a number of arrows that goes down after each shot but i'd like that number to correspond to one of my arrow items in my inventory, so I pick up (or craft) 10 arrows, it goes into my inventory and my bow script updates the amount of arrows left.

Here are my scripts.

---SCRIPT FOR EACH ITEM---

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class Item : MonoBehaviour { public string equipmentType; public int equipmentIndex;

 public Sprite itemSprite;

 public int amountInStack = 1;

 public int maxStackSize = 1000;

 public int itemID;

}

---SCRIPT FOR EACH SLOT---

using System.Collections; using System.Collections.Generic; using UnityEngine.UI; using UnityEngine;

public class Slot : MonoBehaviour { public Item slotsItem;

 Sprite defaultSprite;
 Text amountText;
 
 

 public void CustomStart()
 {
     defaultSprite = GetComponent<Image>().sprite;
     amountText = transform.GetChild(0).GetComponent<Text>();
     amountText.text = "";
     
 }

 public void DropItem()
 {
     if(slotsItem)
     {
         slotsItem.transform.parent = null;
         slotsItem.gameObject.SetActive(true);
         slotsItem.transform.position = Vector3.zero;
     }
 }


 public void CheckForItem()
 {
     if(transform.childCount > 1)
     {
         slotsItem = transform.GetChild(1).GetComponent<Item>();
         GetComponent<Image>().sprite = slotsItem.itemSprite;
         if (slotsItem.amountInStack > 1)
             amountText.text = slotsItem.amountInStack.ToString();
         
     }
     else
     {
         slotsItem = null;
         GetComponent<Image>().sprite = defaultSprite;
         amountText.text = "";
         

     }
 }

}

---SCRIPT FOR INVENTORY---

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class Inventory : MonoBehaviour { public GameObject inventoryObject;

 public Slot[] slots;

 public GameObject player;
 public GameObject NewPickAxe;
 public GameObject NewHatchet;
 public GameObject WoodenBow;
 public GameObject ArrowShoot;

 public Slot[] equipSlots;

 private void Start()
 {
     foreach (Slot i in slots)
     {
         i.CustomStart();
     }
     foreach (Slot i in equipSlots)
         i.CustomStart();
 }
 private void Update()
 {
     {
         if (Input.GetKeyDown(KeyCode.Tab))
         {
             inventoryObject.SetActive(!inventoryObject.activeInHierarchy);

             if (inventoryObject.activeInHierarchy)
             {
                 ShowMouseCursor();
                 player.GetComponent<SC_FPSController>().canMove = false;
                 NewPickAxe.GetComponent<NewPickAxeSwing>().enabled = false;
                 NewHatchet.GetComponent<NewHatchetSwing>().enabled = false;
                 WoodenBow.GetComponent<BowShoot>().enabled = false;
                 ArrowShoot.GetComponent<Shooting>().enabled = false;

             }
             else 
             {
                 HideMouseCursor();
                 player.GetComponent<SC_FPSController>().canMove = true;
                 NewPickAxe.GetComponent<NewPickAxeSwing>().enabled = true;
                 NewHatchet.GetComponent<NewHatchetSwing>().enabled = true;
                 WoodenBow.GetComponent<BowShoot>().enabled = true;
                 ArrowShoot.GetComponent<Shooting>().enabled = true;
             }

         }
     }

     foreach (Slot i in slots)
     {
         i.CheckForItem();
     }
     foreach (Slot i in equipSlots)
         i.CheckForItem();
 }


 public int GetItemAmount(int id)
 {
     int num = 0;
     foreach(Slot i in slots)
     {
         if (i.slotsItem)
         {
             Item z = i.slotsItem;
             if (z.itemID == id)
                 num += z.amountInStack;
         }
     }
     return num;
 }

 public void RemoveItemAmount(int id, int amountToRemove)
 {
     foreach(Slot i in slots)
     {
         if (amountToRemove <= 0)
             return;

         if(i.slotsItem)
         {
             Item z = i.slotsItem;
             if(z.itemID == id)
             {
                 int amountThatCanBeRemoved = z.amountInStack;
                 if(amountThatCanBeRemoved <= amountToRemove)
                 {
                     Destroy(z.gameObject);
                     amountToRemove -= amountThatCanBeRemoved;
                 }
                 else
                 {
                     z.amountInStack -= amountToRemove;
                     amountToRemove = 0;
                 }
             }
         }
     }
 }




 // HIDE AND SHOW MOUSE CURSOR
 public void ShowMouseCursor()
 {
     Cursor.visible = true;
     Cursor.lockState = CursorLockMode.None;
 }

 public void HideMouseCursor()
 {
     Cursor.visible = false;
     Cursor.lockState = CursorLockMode.Locked;
 }






 public void AddItem(Item itemToBeAdded, Item startingItem = null)
 {
     int amountInStack = itemToBeAdded.amountInStack;
     List<Item> stackableItems = new List<Item>();
     List<Slot> emptySlots = new List<Slot>();

     if (startingItem && startingItem.itemID == itemToBeAdded.itemID && startingItem.amountInStack < startingItem.maxStackSize)
         stackableItems.Add(startingItem);

     foreach (Slot i in slots)
     {
         if (i.slotsItem)
         {
             Item z = i.slotsItem;
             if (z.itemID == itemToBeAdded.itemID && z.amountInStack < z.maxStackSize && z != startingItem)
                 stackableItems.Add(z);
         }
         else
         {
             emptySlots.Add(i);
         }
     }

     foreach (Item i in stackableItems)
     {
         int amountThatCanBeAdded = i.maxStackSize - i.amountInStack;
         if (amountInStack <= amountThatCanBeAdded)
         {
             i.amountInStack += amountInStack;
             Destroy(itemToBeAdded.gameObject);
             return;
         }
         else
         {
             i.amountInStack = i.maxStackSize;
             amountInStack -= amountThatCanBeAdded;
         }
     }

     itemToBeAdded.amountInStack = amountInStack;
     if (emptySlots.Count > 0)
     {
         itemToBeAdded.transform.parent = emptySlots[0].transform;
         itemToBeAdded.gameObject.SetActive(false);
     }
 }
 private void OnTriggerEnter(Collider col)
 {
     if (col.GetComponent<Item>())
         AddItem(col.GetComponent<Item>());
 }

}

---SCRIPT FOR BOW---

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class Shooting : MonoBehaviour { [SerializeField] float pullSpeed; [SerializeField] GameObject arrowPrefab; [SerializeField] GameObject arrow; [SerializeField] int numberOfArrows = 10; [SerializeField] GameObject bow; bool arrowSlotted = false; float pullAmount = 0;

 public Animator anim;
 public Animator anim2;

 public GameObject arrowsetactive;


 public Transform fireArrow;

 private AudioSource source;
 public AudioClip fire;
 public AudioClip draw;

 

 




 // Start is called before the first frame update
 void Start()
 {
     anim = anim.GetComponent<Animator>();
     source = GetComponent<AudioSource>();
 }

 // Update is called once per frame
 void Update()
 {
     ShootLogic();
 }

 void SpawnArrow()
 {
     if(numberOfArrows > 0)
     {
         arrowSlotted = true;
         
         arrow = Instantiate(arrowPrefab, fireArrow.position, fireArrow.rotation) as GameObject;



         
         arrow.transform.parent = transform;
     }
 }

 void ShootLogic()
 {
     if (numberOfArrows > 0)
     {
         if (pullAmount > 100)
             pullAmount = 100;

         Rigidbody _arrowRigidB = arrow.transform.GetComponent<Rigidbody>();
         ProjectileAddForce _arrowProjectile = arrow.transform.GetComponent<ProjectileAddForce>();

         
         
         if (Input.GetMouseButton(0))
         {
             
             pullAmount += Time.deltaTime * pullSpeed;
             Debug.Log(pullAmount.ToString());
             

             if (Input.GetMouseButtonDown(0))
             {
                 Invoke("PlayDrawSound", 0.8f);
             }


         }
         if (Input.GetMouseButtonUp(0))
         {
             
             arrowSlotted = false;
             
             _arrowRigidB.isKinematic = false;
             arrow.transform.parent = null;

             
             anim2.GetComponent<Animator>().enabled = false;
             

             anim.enabled = false;
             _arrowRigidB.AddForce(transform.forward * ((pullAmount * 25) + .05f));
             numberOfArrows -= 1;

             PlayHitSound();


             pullAmount = 0;

             _arrowProjectile.enabled = true;


         }
         
         if (Input.GetMouseButtonDown(0) && arrowSlotted == false)
             


         Invoke("SpawnArrow", 2.0f);






     }  
 }


 private void PlayHitSound()
 {
     source.clip = fire;
     source.Play();
 }

 private void PlayDrawSound()
 {
     source.clip = draw;
     source.Play();
 }

}

Thanks soo much if you've read all of this, I know its a lot. But just an idea in the right direction would help soo much. (sorry if it's a little messy, not sure how to copy/paste the scripts properly)