Unity Application settings

ApplicationSetting.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;

public class ApplicationSetting : MonoBehaviour
{
	[SerializeField] int FrameRate = 30;
	[SerializeField] bool ESC_Quit = true;
	void Start()
	{
		Application.targetFrameRate = FrameRate;
	}

	void Update()
	{
		if (ESC_Quit)
		{
			var keyboard = Keyboard.current;
			if (keyboard != null)
			{
				if (keyboard.escapeKey.wasPressedThisFrame)
				{
					Quit();
				}
			}
		}
	}

	void Quit()
	{
#if UNITY_EDITOR
    UnityEditor.EditorApplication.isPlaying = false;
#else
		Application.Quit();
#endif
	}
}