Please note that ProfileService is a module, not a “Service”. Basically more of a tool. See here: Save your player data with ProfileService! (DataStore Module)
To display variables would be figured out via the API. ProfileService
As a datastore service is serversided, you can either edit a UI on the server, or use remote event. If data doesn’t change, simply sending data via the server to the client from Player.PlayerGui works fine. Now if data changes more frequently, I advise using a remote event.