Can i make a shop gui without using a remote event for every single purchase?

i don't know how to do this :(

Short Answer: No. You have to use a Remote Event in order to replicate everything to the server (for example, putting an item onto the player's backpack.) Long Answer: Still no, but you can use one event and put a string or bool or number in order to do something.

Local Script

local remoteEvent = game.ReplicatedStorage.RemoteEvent

remoteEvent:FireServer(BrickColor.new("Really red")) --Let's just say I wanna pass the brickcolor.

Server Script

local remoteEvent = game.ReplicatedStorage.RemoteEvent
local handle = game.StarterPack.Tool.Handle --Let's just say I wanna make a part red.

remoteEvent.OnServerEvent:Connect(function(player, brick) --1st parameter is always the player, 2nd is the brick we have put on the FireServer()
	handle.BrickColor = brick
end)