Trouble adding score when specific object is clicked. (C#)

Trouble adding score when specific object is clicked. (C#)

I'm learning Unity, C#, and attempting to make a Hidden Object Game concept. In other words, I'm a total n00b at this. :)

What I have done is assign specific objects with the tag, "HOGitem". What I want to do is accrue a score when a HOGitem is clicked on and only when those specific items are clicked on. Here's the script:

 using UnityEngine;
 using System.Collections;
 
 public class ScoreManager : MonoBehaviour {
 
     public float pointsPerHOG = 10;
     private float score;
     public GameObject HOGobj;
 
     // Use this for initialization
     void Start () {
         HOGobj = GameObject.FindWithTag("HOGitem");
     }
     
     // Update is called once per frame
     void Update () {
           
           //The intent is to have only the HOGobj add to the score when clicked.
           if(Input.GetMouseButtonDown(0)){
 
                 if(HOGobj) {
         AddPoints (pointsPerHOG);
          }
     }
 }
 
     void OnGUI() {
         GUILayout.Label("score: " + score.ToString("0"));
     }
 
 
     void AddPoints(float points){
         score += points;
     }
 
 }

This will make everything with a collider add to the score until the items that have the tag "HOGitem" are destroyed. I'm a little slow and can't figure out how to use what I researched online to my advantage. I found this:

     void Update(){
     if (Input.GetMouseButtonDown(0)){ // if left button pressed...
     Ray ray = camera.ScreenPointToRay(Input.mousePosition);
     RaycastHit hit;
     if (Physics.Raycast(ray, out hit)){
     // the object identified by hit.transform was clicked
     // do whatever you want
     }
     }
     }

But I have no idea how to make it work so that it "Does whatever I want" only when I click on the items tagged with "HOGitem". I'm learning quite a lot, but apparently not fast enough. Any help with this is greatly appreciated.

Thanks,

Mike