C# character enhancement code in Unity. Can you help?

Question

2D

Hello! I have two questions at once
. Introduction: I started developing a clicker with monsters and heroes. When it came to improving the DPS (damage per second) hero, the problems started. I made a bool, which means that the character has already appeared and the question arose how to make it so that it is activated when the character appears? I left this problem for later since bool is public and I could enable it manually for now. And I immediately ran into the second problem, namely, that after I bought this character, he appeared and started shooting, I turned on bool UpTime and by pressing the button the money is removed, but the character does not improve! I IMMEDIATELY SORRY FOR THE CURVE CODE, I'M A BEGINNER and I throw off all the code to make it easier for you to understand
(I searched for information for 2 days and did not find anything, I really need your help)
Questions: 1. How to enable bool on button click?
2. How to make the character improve?

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

public class UpButtonHelper : MonoBehaviour
{
    public Text DamageText;
    public Text PriceText;
    public int Damage = 1;
    public int Price = 10;
    public bool IsHero;
    public bool IsRuby;
    public bool UpTime;
    public GameObject HeroPrefab;
    public float X, Y, Z, Mult;
    GameHelper _gameHelper;
    HeroHelper _heroHelper;
    BulletHelper _bulletHelper;

    // Start is called before the first frame update
    void Start()
    {
        _gameHelper = GameObject.FindObjectOfType<GameHelper>();
        _heroHelper = GameObject.FindObjectOfType<HeroHelper>();
        _bulletHelper = GameObject.FindObjectOfType<BulletHelper>();
        DamageText.text = "+" + Damage.ToString();
        PriceText.text = Price.ToString();
    }

    // Update is called once per frame
    void Update()
    {
            DamageText.text = "+" + Damage.ToString();
            PriceText.text = Price.ToString();
    }

    public void UpClick()
    {
        if (!IsRuby && _gameHelper.PlayerGold >= Price || IsRuby && _gameHelper.PlayerRuby >= Price)
        {
            if (!IsRuby)
            {
                _gameHelper.PlayerGold -= Price;
            }
            else
            {
                _gameHelper.PlayerRuby -= Price;
            }

            if (IsHero == false)
            {
                _gameHelper.PlayerDamage += Damage;
            }
            else
            {
                if (UpTime == false)
                {
                    GameObject hero = Instantiate(HeroPrefab) as GameObject;
                    Vector2 heroPos = new Vector2(X, Y);
                    hero.transform.position = heroPos;
                }
                _heroHelper.Damage += Damage;
                Damage = Damage * 2;
            }
        }
    }
}

Answer 1

UpClick() looks complicated)