WhenTouchedChangeScene.cs

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

public class WhenTouchedChangeScene : MonoBehaviour
{
    public string scene;
    public Transform playerObject;

    public float distance = 2;
    // Start is called before the first frame update
    void Start()
    {

    }

    // Update is called once per frame
    void Update()
    {
        //Debug.LogError("Hello");
    }
    void OnMouseDown()
    {
        var dist = Math.Abs(Vector3.Distance(this.transform.position, playerObject.position));
        Debug.Log("Distance is " + dist);

        if (dist < distance){

            var text = GameObject.Find("GlobalText").GetComponent<Text>();
            text.text = "Loading scene " + scene + "....";
            SceneManager.LoadScene(scene);
            text.text = "Loaded.";
        }
    }

}