I want to hide part of a leaderboard in a game, but is there anyway I can position it to hide the parts I want to hide?
Well, for starters, try to make your question state the issue instead of a broad statement. It'll help you get better answers in less time.
As for your question, are you talking about ROBLOX's default leaderboard? If so, I don't think you can directly modify its position or size. And, it only displays what you ask it to.
If you're trying to keep track of stats invisibly, just use Values (string for text, integer for numbers, et cetera). Then, don't put those stats into the leaderboards.
If you're talking about putting something like a GUI over the part you don't want display, I suppose that's possible, it'd just look very unprofessional.