Where would I call the DoDestroyOnLoad function on my Singleton Script

Questions & Answers
1

I need to load my scene . The singleton script is attach to a UI text . I gotten an error when I have the destroyonload. 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);
 }

}

2

Use Unity Wiki Singleton Script

You will not have to take care of anything.