GameSystem.cs

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

public class GameSystem : MonoBehaviour
{
    public Text text;
    public int score = 0;
    void Start()
    {
        
    }

    void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {
            var tapPoint = Camera.main.ScreenToWorldPoint(Input.mousePosition);
            var collition2d = Physics2D.OverlapPoint(tapPoint);
            if (collition2d)
            {
                var hitObject = Physics2D.Raycast(tapPoint, -Vector2.up);
                if (hitObject)
                {
                    Debug.Log("hit object is " + hitObject.collider.gameObject.name);
                    if (hitObject.collider.gameObject.name == "mogura"
                        && hitObject.collider.gameObject.GetComponent<SpriteRenderer>().enabled)
                    {
                        score += 10;
                        text.text = "スコア: " + score;
                    }
                }
            }
        }
    }
}