Hello I have watched a youtube tutorial

[covert mango]

GameManager.cs:

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

public class GameManager : MonoBehaviour
{
    
    public GameObject block;
    public float maxX;
    public Transform spawnPoint;
    public float spawnRate;

    bool gameStarted = false;

    public GameObject tapText;
    public TextMeshProUGUI scoreText;
    

    int score = 0;

    // Update is called once per frame
    void Update()
    {
        if (Input.GetMouseButtonDown(0) && !gameStarted)
        {
            StartSpawning();
            
            gameStarted = true;
        }
        
        
    }

    void StartSpawning()
    {
        InvokeRepeating("SpawnBlock", 0.5f, spawnRate);
    }
    

    void SpawnBlock()
    {
        Vector3 spawnPos = spawnPoint.position;

        spawnPos.x = Random.Range(-maxX, maxX);
        
        Instantiate(block, spawnPos, Quaternion.identity);

        score++;
        
        scoreText.text = score.ToString();
        tapText.SetActive(false);

    }
}

player.cs:

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

public class Player : MonoBehaviour
{
    public float moveSpeed;
    private Rigidbody2D rb;

    // Start is called before the first frame update
    void Start()
    {
        rb = GetComponent<Rigidbody2D>();
    }

    // Update is called once per frame
    void Update()
    {
        if (Input.GetMouseButton(0))
        {
            Vector3 touchPos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
            if (touchPos.x < 0)
            {
                rb.AddForce(Vector2.left * moveSpeed);
            }
            else
            {
                rb.AddForce(Vector2.right * moveSpeed);
            }
        }
        else
        {
            rb.velocity = Vector2.zero;

        }
    }

    void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.gameObject.tag == "block")
        {
            SceneManager.LoadScene("Game");
        }
    }
}