How do I make an in-game clothing scripted catalog?

In-Game clothing scripted catalog, Funny thing is I almost didn't see clothing in the title, It depends if it is a Gui or not, If it isn't than make the model of the shirt or pants or both you want them to buy or a decal is fine, Than put a ClickDetector in and script, There is a In-Game Purchase script you can use to buy clothes, It would go like this:

local cleanSweepId = 109592995


script.Parent.ClickDetector.MouseClick:connect(function(player)
    game:GetService("MarketplaceService"):PromptPurchase(player, cleanSweepId)
end)

I suggest you make the shirt or pants you want to sell than add a buy sign in front of it and where people click to buy, Put a Click Detector and a script not a local script and put this in, Change the cleanSweepId to the ID of your Shirts/Pants/Gears, If you want a Gui than :D

local screenGui = Instance.new("ScreenGui") -- Create the screenGui that holds it.
screenGui.Parent = script.Parent


local textButton = Instance.new("TextButton") -- Create a textLabel (Text) that is a button you can click
textButton.Parent = screenGui
textButton.Position = UDim2.new(0, 25, 0, 50)
textButton.Size = UDim2.new(0, 150, 0, 50)
textButton.BackgroundColor3 = BrickColor.White().Color
textButton.Text = "Click Me!"


textButton.MouseButton1Down:connect(function()
local cleanSweepId = 109592995


script.Parent.ClickDetector.MouseClick:connect(function(player)
    game:GetService("MarketplaceService"):PromptPurchase(player, cleanSweepId)
end)

end)

Welp like I said I am a beginner but I hope I helped you, You look like you can build a cool store :D