having a hadtime with script access

I am having a impossible time with this. I have a laser script that I have on three weapons that are all attached to the player. each weapon is a child of the parent. What I want them to do is to be able to access a script that keeps score. However I am not able to do that. I have tried to find tutorials online but they are impossible to understand. Please help. I have included both scripts below. The first is the laser script and the second is the score script.

 using UnityEngine;
 using System.Collections;
 
 public class LaserbeamTrio : MonoBehaviour 
 {
     MonoBehaviour score;
     LineRenderer line;
     public GameObject explosionA;
     public AudioClip boom;
     public GameObject explosionB;
     public GameObject explosionC;
     
     void Start () 
     {    
         line = gameObject.GetComponent<LineRenderer>();
         line.enabled = false;
     }
     void Update () 
     {
         if(Input.GetButtonDown("Fire1"))
             
         {
             StopCoroutine("FireLaser");
             StartCoroutine("FireLaser", 0.25F);
             audio.Play();
                     }
     }
     IEnumerator FireLaser(float lengthOfTime)
     {
         line.enabled = true;
         var t = Time.time;
         
         while(Input.GetButton("Fire1") && Time.time - t < lengthOfTime)
             
         {
             Ray ray = new Ray(transform.position, transform.forward);
             RaycastHit hit;
             
             line.SetPosition(0, ray.origin);
             
             if(Physics.Raycast(ray, out hit, 150))
             {
                 line.SetPosition(1, hit.point);
                     if  (hit.collider.tag == "Asteroid")
                 {
                     Instantiate(explosionA, hit.point, transform.rotation);
                     Destroy(hit.transform.gameObject); 
                     audio.PlayOneShot(boom, 1F);
                     GetComponent("Score");
                     
                 }
                     else if  (hit.collider.tag == "Missile")
                 {
                     Instantiate(explosionB, hit.point, transform.rotation);
                     Destroy(hit.transform.gameObject); 
                     audio.PlayOneShot(boom, 1F);
                     GetComponent("Score");
                 }
                 else if  (hit.collider.tag == "Ufo")
                 {
                     Instantiate(explosionC, hit.point, transform.rotation);
                     Destroy(hit.transform.gameObject); 
                     audio.PlayOneShot(boom, 1F);
                     GetComponent("Score");
                 }
                             }
                     else 
                 line.SetPosition(1, ray.GetPoint(150));
             
             yield return null;
         }
         line.enabled = false;
 
     }
         }

Score script

 using UnityEngine;
 using System.Collections;
 
 public class Scorer : MonoBehaviour 
 {
     private int count;
     public GUIText countText;
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () 
     {
         count =count +1;
         SetCountText ();
 
         }
         void SetCountText ()
     {
         countText.text = "Score : " + count.ToString();
         if(count >= 100)
         {
             Application.LoadLevel ("win level 1");
         }
     }
     
 }