I'm not exactly sure what you are asking. Don't you just put the display as "User "&computerUsername&" is on."? Can you go more in depth with your question?
Hi sorry for late reply. I'm designing game where at end it just bricks itself. Basically, to unbrick it you'll be needed to delete save file folder. And since my game is gonna be on Windows using NWJS that means save file is in AppData folder. So, what I need is to display that folder location and since everyone has different name on PC I need is to display that specific name for example C:\Users\"username"\AppData\Game . "Username" should be replaced by username of computer.