error CS0176: Static member `GameManagerSingleton.score' cannot be accessed with an instance reference, qualify it with a type name instead

I had made some changes on my script and I gotten one error. I trying to access the score script along with another script . Here is my scripts:

using UnityEngine; using System.Collections; using UnityEngine.SceneManagement; public class Game : MonoBehaviour {

private MyClockScript myClock; void Start () { myClock = GetComponent(); }

 // Update is called once per frame
 void Update () {
  if (myClock.m_leftTime <= 0 || GameManagerSingleton.instance.score > 50)
        {
            SceneManager.LoadScene("I");
        }
 }

}

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);
  }
 
 
 
 
 
 
 
 

}