I’m not sure what you’re wanting to do. If you’re looking to know if the button has been pressed before and then pressed again, you should add a table with Player IDs assuming this is a Server-sided script.
local IDs = { }
local ProximityPrompt = workspace["e\\redp\\art"].ProximityPrompt
ProximityPrompt.Triggered:Connect(function(Plr)
if IDs[Plr.UserId] then
IDs[Plr.UserId] = nil
workspace["number 15 burger king foot lettuce"]:Stop()
workspace.ScreenPart.Decal.Texture = "rbxassetid://497226126"
else
IDs[Plr.UserId] = true
workspace.ScreenPart.Decal.Texture = "rbxassetid://3619798866"
workspace["number 15 burger king foot lettuce"]:Play()
end
end)