StartScene.cs

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

public class StartScene : MonoBehaviour
{
    public Animator StartScreen;

    AudioSource audioSource;

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

    // Update is called once per frame
    void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {
            StartScreen.SetTrigger("Hide");
            SceneManager.LoadScene("Single_RacquetBall");
        }
    }
}