Scriptum/Assets/Scripts/ChangeScene.cs

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

public class ChangeScene : MonoBehaviour
{
    public void MoveToScene(int sceneID)
    {
        SceneManager.LoadScene(sceneID);
    }

    public void OnCollisionEnter2D(Collision2D collision)
    {
        if(collision.gameObject.tag == "SceneTransition")
        {
            DoorBehaviour.Instance.ScenetToMoveTo();  
        }
    }
}