free code to change scenes using a trigger

//list you player as player and list the cube you whant to teleport with is trigger 
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class next : MonoBehaviour
{
    private void OnTriggerEnter(Collider other)
    {
        SceneManager.LoadScene(2);
    }
}