MenuScript.cs

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

public class MenuScript : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }

    public void startGame(){
        SceneManager.LoadScene("World");
    }
    public void quitGame(){
        quitGame();
    }
    public void openMenu(){
        SceneManager.LoadScene("Menu");
    }
    public void openDeath(){
        SceneManager.LoadScene("Death");
    }
    public void openEnd(){
        SceneManager.LoadScene("End");
    }
}