Write a new high score does not!!!

I could not find flaw. Can you tell me my shortcoming or more?

 var point : GUIText;
 var level : GUIText;
 function Start(){
 }
 function Awake(){
  point.text= "Point: "+ PlayerPrefs.GetInt("HighScore");
  level.text= "Level: "+ PlayerPrefs.GetInt("level");
 
 }
 function Update () {
    if(Input.touchCount == 1) {
       var touch = Input.touches[0];
       if(touch.phase == TouchPhase.Ended && guiText.HitTest(touch.position)) {
          Application.LoadLevel("01");
       }
    }
 }

score table #pragma strict var ses1:AudioClip; static var puan:int=0; var poin : GUIText; function Start () { }

 function OnTriggerEnter(nesne:Collider)
 {
 if(nesne.collider.name=="missile"){
 AudioSource.PlayClipAtPoint(ses1, transform.position);
 Destroy(this.gameObject);
 puan++;
 poin.text="Point : "+puan;
 }
 }
 function GameOver() {
 if(puan > PlayerPrefs.GetInt("HighScore")){
     PlayerPrefs.SetInt("HighScore",puan);
 }
 }