warning CS0414: The private field `GameManagerSingleton.text' is assigned but its value is never used

I am having problem with my Score System . When I click on play the text Score is displaying on the screen incorrectly like this Score : . I need the score to display on the scene like this Score : 0 the way I have coded the script . I also gotten and this warning message CS0414: The private field `GameManagerSingleton.text' is assigned but its value is never used . I don't know what this means. Here is my script

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

public class GameManagerSingleton : MonoBehaviour { public static GameManagerSingleton instance = null;

  public static int score;
  


  private Text text;
  
  void Awake()
  {
      text = GetComponent <Text> ();
      score = 0;
      if (instance != null && instance != this)
          Destroy(gameObject);    // Ensures that there aren't multiple Singletons
 
      instance = this;
  }
  
  void Update()
  {
     text.text = "Score: " + score;
      Debug.Log("Score: " + score);
  }