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);
 }

}

Okay. I figure it out I just delete instantce . I got no errors.