Raycast error

Please help me it doesn't show eny errors but it doesn't work.

here is script:

 using UnityEngine;
 using System.Collections;
 
 public class RockPickUp : MonoBehaviour {
     
     void Update () {
 
         var fwd = transform.TransformDirection(Vector3.forward);
 
         RaycastHit hit;
 
         if (Physics.Raycast(transform.position, fwd, out hit)) 
         {
             if(hit.distance <= 5.0 && hit.collider.gameObject.tag == "PickUp")
             {
                     //I want the pick up script so when you come closer to the rock and pres E it shoes +1 in my inventory, 
                     //i know how to do the inventory stuff but i don't know raycast please help
             }
         }
     }
 }