I need some scripts/help if possible

If anyone cares to read (if you don't care then don't read):

I just made a new game, it's called The Hood: New York. It's a roleplay about the ghetto of NYC. I think my building skills are pretty decent and I can make some good stuff off of building alone but I cannot script, I have no knowledge of scripting (please don't judge me) and I have to resort to configuring some free models since I don't know anything scripting. Since it is the hood and I want it to be realistic about what goes on in the hood, I want to add a drug dealing/hustling system, a money system and a gun store system. The way I want it to be is you can find various small scraps of money, small bags of drugs (grams), occasionally large bricks of drugs (brick = kilogram) or pistols around the map (The drug slang will have to be used so Roblox won't moderate the game, example: Dime or Brick). You can collect these and it will be a tool in your inventory. There will 2-3 dealers in obscure places around the map, you can sell the grams or bricks (kilos) for money and use that money to buy guns or knives from the dealers with their store popping up as a GUI when you walk up to them. The drugs will dissapear from your inventory after you click the sell button and you get a certain amount of money based off of how much you gave them. Then you can buy guns using that money.

This is the link to my new game for anyone that cares:

https://www.roblox.com/games/5657637859/The-Hood-New-York

Any help would be greatly appreciated, also I'm open to any constructive criticism. Keep in mind I have no knowledge of scripting at all besides maybe changing health or damage values. If anyone could help me add these features to my game I would appreciate it a lot, I want to get some money and put it into advertisements to get it some attention.