Highscore not working

I have a score and high score script that doesn't seem to be working there are no errors but the high score doesn't update when the player dies.

CODE

 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections;
 
 public class ScoreOnEnd : MonoBehaviour
 {
     public static ScoreOnEnd End;
     public Text countText;
     private int count;
     public Text HighScore;
     private int Highcount;
     public GameObject Player;
     
     
     
     void Start ()
     {
         End = this;
         countText.gameObject.SetActive(false);
         count = 0;
         SetCountText ();
         HighScore.gameObject.SetActive(false);
         Highcount = 0;
         SetHighScore ();
         Highcount = PlayerPrefs.GetInt ("HighScore1", 0);
         
         
         
     }
     
     void update () {
 
         
         
         
     }
     
     void OnTriggerEnter2D(Collider2D col) 
     {
         if (col.gameObject.tag == "Coin") {
             
             count = count + 1;
             SetCountText ();
             
         } else if (col.gameObject.tag == "Enemy") {
         
 
             countText.gameObject.SetActive(true);
             HighScore.gameObject.SetActive(true);
 
         
         }
     }
     
     void SetCountText ()
     {
 
         countText.text = " " + count.ToString ();
         
         
     }
     void SetHighScore ()
     {
         HighScore.text = Highcount.ToString ();
     
     }
 
     public void CheckHighScore(){
 
         if (count > Highcount) {
         
             PlayerPrefs.SetInt("HighScore1", count);
         
             
         }
 
 
     }
 
 
 
 
 
 
 
 
 
 
 }