I was wondering if i can make a seat that when you sit in it a click detector appears on a part?

i have the click to earn 1+ leaderstats already but i want to have it where if you sit you can only click it so when you get up from the seat you cant click it anymore

With the humanoid.StateChanged Event (Humanoid is the "core" part of a player.) you can detect whenever a player is sitting, walking, etc. Click detectors have a property called MaxActivationDistance which sets how far a player can click the Click Detector. If we set the MaxActivationDistance to 0 when the player is not sitting the player won't be able to click the Click Detector. Below is an example of what you could do:

local player = game.Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local humanoid = character:WaitForChild("Humanoid", 10)

local clickDetector = game.Workspace.Button.ClickDetector

humanoid.StateChanged:Connect(function(oldState, newState)
	
	--Setting the Click Detector to a clickable distance when the player is sitting.
	if newState == Enum.HumanoidStateType.Seated then
		clickDetector.MaxActivationDistance = 20
	end
	
	--Setting the Click Detector to an unclickable distance when the player is not sitting.
	if newState ~= Enum.HumanoidStateType.Seated then
		clickDetector.MaxActivationDistance = 0
	end
	
end)

clickDetector.MouseClick:Connect(function()
	print("Clicked!")
	--Whatever code you want to activate when the Click Detector is clicked
end)