How To Check If A Bullet Hits Another Object (player) From Another Script

In my script I have a bullet initiate whenever the enemy gets close, but I need to change the PlayerHealth variable so it can't be a script on the bullet GameObject. Because of this I need to find a way to

• Access the bullet (which should be easy)

• check if it collides with the player

• and if it does take off 10 health

Here is my script:

 #pragma strict
 
 var Player : Transform;
 public var MoveSpeed = 10;
 public var MaxDist = 7;
 public var MinDist = 5;
 public var AttackDistance = 5;
 public var PlayerHealth = 300;
 public var EnemyHealth = 10;
 var ani : Animator;
 var AnimAttack : boolean;
 var AnimDie : boolean;
 var AnimShoot : boolean;
 public var IsDead : boolean;
 var bullet : GameObject;
 var spawnPoint : Transform;
 
 function Start () 
 {
     ani.enabled = false;
     AnimAttack = false;
     AnimDie = false;
     IsDead = false;
     AnimShoot = false;
 }
  
 function Update () 
 {
     if(IsDead) {
         Die();
     }
     else {
         if(gameObject.tag == "EnemyMelee") {
             if(Vector3.Distance(transform.position,Player.position) <= MaxDist) {
                 transform.LookAt(Player);
      
      
                 transform.position += transform.forward*MoveSpeed*Time.deltaTime;
  
                 if(Vector3.Distance(transform.position,Player.position) <= AttackDistance)
                 {
                     if(Vector3.Distance(transform.position,Player.position) <= AttackDistance && Input.GetMouseButtonDown(0)) {
                         EnemyHealth = EnemyHealth - 1;
                         print(EnemyHealth + " = Enemy Health");
                     }
                     else {
                         AttackMelee();
                     }
                 }
 
                 if(EnemyHealth <= 0) {
                     IsDead = true;
                 }
 
                 if(PlayerHealth <= 0) {
                     Application.LoadLevel(1);
                 }
                 if (AnimAttack == true) {
 
                     ani.SetBool("AnimAttack", true);
                     ani.SetBool("AnimDie", false);
 
                 }
                 if (AnimDie == true) {
 
                     ani.SetBool("AnimAttack", false);
                     ani.SetBool("AnimDie", true);
 
                 }
             }
 
             else {
 
             }
         }
         if(gameObject.tag == "EnemyRanged") {
             if(IsDead) {
                 Die();
             }
             else {
                 if(Vector3.Distance(transform.position,Player.position) <= MaxDist) {
                     transform.LookAt(Player);
      
      
                     transform.position += transform.forward*MoveSpeed*Time.deltaTime;
  
                     if(Vector3.Distance(transform.position,Player.position) <= AttackDistance)
                     {
                         if(Vector3.Distance(transform.position,Player.position) <= AttackDistance && Input.GetMouseButtonDown(0)) {
                             EnemyHealth = EnemyHealth - 1;
                             print(EnemyHealth + "= Enemy Health");
                         }
                         else {
                             AttackRanged();
                         }
                     }
 
                     if(EnemyHealth <= 0) {
                         IsDead = true;
                     }
 
                     if (AnimShoot == true) {
 
                         ani.SetBool("AnimAttack", false);
                         ani.SetBool("AnimDie", false);
                         ani.SetBool("AnimShoot", true);
 
                     }
                     if (AnimDie == true) {
 
                         ani.SetBool("AnimAttack", false);
                         ani.SetBool("AnimShoot", false);
                         ani.SetBool("AnimDie", true);
 
                     }
                 }
                 else {
 
                 }
             }
         }
 
     }
 }
 
 function Die() {
 
     ani.enabled = true;
     AnimAttack = false;
     AnimDie = true;
     yield WaitForSeconds (3);
     Destroy (gameObject);
 
 }
 function AttackMelee() {
     PlayerHealth = PlayerHealth - 0.000001;
     print(PlayerHealth);
     ani.enabled = true;
     AnimAttack = true;
     AnimDie = false;
 }
 function AttackRanged() {
 
     ShootGun();
     print(PlayerHealth);
     ani.enabled = true;
     AnimAttack = false;
     AnimDie = false;
     AnimShoot = true;
 }
 function ShootGun (){
     var nBullet = Instantiate(bullet, spawnPoint.position, spawnPoint.rotation);
     nBullet.GetComponent.<Rigidbody>().velocity = spawnPoint.TransformDirection(Vector3(0,0,100));
     //Check collision here!!!
 }