How do I access my password to downloaded stuff?

How do I access my password to download stuff on my apple iPad

Well, let's see:

1. You can recall it from memory
2. If you have it listed in a password app or written down on paper somewhere, you can retrieve it
3. If you've told it to someone else for safekeeping then you can ask that person to tell you the passcode.

source: forums.imore.com