What happens if you lose it? is there anyway to get it back if you lost it, or see it?

You don't actually need to know it. Once you've seen it once, it'll come up with

Obtain a blue building password - - b[/b]

And you don't need to use it for anything.

But I'm not sure if there's a way to see it again, anyway.

You don't actually need to remember it. If your account is frozen it's one possible way to prove you're the owner but it's really not all that important.

oh okay, that's all I was worried about xD