No I am not gonna use the roblox bubble chat system.
I want a custom roblox chat system with maths that roblox use to display its bubble chat. but I dont know how? Like you know how roblox scales it bubble chat text? yea I want it like that. cuz billboard guis dont have AutomaticSize sooo how can I do this?
GUI objects have a property called AbsoluteSize you can use to get the size in on-screen pixels of any GUI. If you need that size in proportion to the screen your user is on, you can use the ViewportSize property of the Camera and compare AbsoluteSize to it.