I Need help keeping my score forever

using UnityEngine; using UnityEngine.UI; using System.Collections;

public class ScoreManager : MonoBehaviour { public static int score; // The player's score.

 Text text;                      // Reference to the Text component.
 
 
 void Awake ()
 {
     // Set up the reference.
     text = GetComponent <Text> ();
     
     // Reset the score.
     score = 0;
 }
 
 
 void Update ()
 {
     // Set the displayed text to be the word "Score" followed by the score value.
     text.text = "" + score;
 }

}