Shooting script issue?

I recently started working on a game and so far so good but the only issue is the shooting part. I was watching a tutorial on how to do this but it doesn't work because it cant find the Mouselook script even though I have it in my Scripts folder. Is there anyway to fix this?

Here is the script I am using(Java Script): var PlayerTransform : Transform; var PlayerScript : Player; var RotationSpeed : float; var PlayerCamera : GameObject; var IsAiming : boolean = false; var GunAnimationHolder : GameObject;

 //Targets
 
 @HideInInspector
 var TargetXrotation : float;
 
 @HideInInspector
 var TargetYrotation : float;
 
 @HideInInspector
 var TargetXrotationV : float;
 
 @HideInInspector
 var TargetYrotationV : float;
 
 // Gun Specs
 var MaxClipSize : float = 32;
 var AmmoInCurrentClip : float = 32;
 var ExtraAmmo : float = 128;
 var MaxCarringAmmo : float = 256;
 
 //  Bullets and shiz
 var Bullet : GameObject;
 var BulletSpawn : GameObject;
 var BulletSound : GameObject;
 var FireRate : float;
 var FireTimer : float;
 
 //Recoil
 var Recoil : float = 3;
 var RecoilAimingIn : float = 3;
 var RecoilAimingOut : float = 6;
 
 //Reloads
 var ReloadAnimation : GameObject;
 var ReloadSound : AudioSource;
 var Reloading : boolean = false;
 var ReloadName : String;
 
 
 function Update()
 {
 AimingInController();
 }
 
 function AimingInController()
 {
 IsAiming = GunAnimationHolder.GetComponent(Player).AimingIn;
 }
 
 function LateUpdate () 
 {
 
 if (AmmoInCurrentClip > MaxClipSize)
 
 AmmoInCurrentClip = MaxClipSize;
 
 if (ExtraAmmo > MaxCarringAmmo)
 
 ExtraAmmo = MaxCarringAmmo;
 
 if (FireTimer < -5)
 FireTimer = -5;
 
 if (MaxClipSize < 0)
 
 MaxClipSize = 0;
 
 if (AmmoInCurrentClip < 0)
 
 AmmoInCurrentClip = 0;
 
 if (!Reloading && AmmoInCurrentClip < MaxClipSize && ExtraAmmo > 0 && Input.GetButtonDown("Reload")&& IsAiming == false)
     {
         Reloading = true;
         ReloadSound.Play();
         ReloadAnimation.animation.Play(ReloadName);
     }
     
 if (!Reloading && AmmoInCurrentClip == 0 && ExtraAmmo > 0 && Input.GetButtonDown("Fire1") && IsAiming == false)
     {
         Reloading = true;
         ReloadSound.Play();
         ReloadAnimation.animation.Play(ReloadName);
     }
     
 if (Reloading && !ReloadAnimation.animation.IsPlaying(ReloadName))
 {
 if (ExtraAmmo >= MaxClipSize - AmmoInCurrentClip)
 {
 ExtraAmmo -= MaxClipSize - AmmoInCurrentClip;
 AmmoInCurrentClip = MaxClipSize;
 }
 
 if (ExtraAmmo < MaxClipSize - AmmoInCurrentClip)
 {
 AmmoInCurrentClip += ExtraAmmo;
 ExtraAmmo = 0;
 }
 Reloading = false;
 }
 
 var MyBulletSound : GameObject;
 
 if (Input.GetButton("Fire1") && AmmoInCurrentClip > 0 && !Reloading)
 {
 
 if (FireTimer <= 0)
 {
 AmmoInCurrentClip -= 1;
 
 TargetXrotation += (Random.value - 0.5) *Mathf.Lerp (Recoil, RecoilAimingOut,0);
 TargetYrotation += (Random.value - 0.5) *Mathf.Lerp (Recoil, RecoilAimingOut,0);
 
 
 if (Bullet)
 
 Instantiate(Bullet,BulletSpawn.transform.position,BulletSpawn.transform.rotation);
 
 if (BulletSound)
 
     MyBulletSound = Instantiate(BulletSound,BulletSpawn.transform.position,BulletSpawn.transform.rotation);
 
 FireTimer = 1;
 
 }
 
 
 }
 
 if (Input.GetButton("Fire2") && !Reloading )
 {
     Recoil = RecoilAimingIn;
 
 }
 
 if (Input.GetButton("Fire2") == false || Reloading )
 {
     Recoil = RecoilAimingOut;
 
 }
 
 
 FireTimer -= Time.deltaTime * FireRate;
 
 transform.position = PlayerCamera.transform.position + (Quaternion.Euler(0,TargetYrotation,0) * Quaternion.Euler(TargetXrotation,TargetYrotation,0) * Vector3(0,0,0));
 
 TargetXrotation = Mathf.SmoothDamp(TargetXrotation, -PlayerCamera.GetComponent(MouseLook).rotationY,TargetXrotationV,RotationSpeed);
 
 TargetYrotation =Mathf.SmoothDamp(TargetYrotation, PlayerCamera.GetComponent(MouseLook).RotationX,TargetYrotationV,RotationSpeed);
 
 transform.rotation = Quaternion.Euler(TargetXrotation,TargetYrotation,0);
 
 
 }