SettingsPersistance.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class SettingsPersistance : MonoBehaviour
{
    public static SettingsPersistance INSTANCE;

	[HideInInspector] public Level level;
    [HideInInspector] public int turnDuration;
    [HideInInspector] public int maxPoints;

    void Awake()
    {
        if (INSTANCE == null)
        {
            DontDestroyOnLoad(gameObject);
            INSTANCE = this;
        }   

        if (INSTANCE != this)
        {
            Destroy(gameObject);
        }

		defaultValues();
    }

	private void defaultValues()
	{
		level = Level.facil;
		turnDuration = 8;
		maxPoints = 3;
	}
}

public enum Level
{
	facil,
	normal,
	dificil	
}