in the game chat try to type .bot or .bots
Where did you download the repack? In the description they should have told you what commands you can use.
Are you sure you have npcbot in your repack?
https://www.emucoach.com/forums/threads/newest-vip-version-2-0-mists-of-pandaria-blizzlike-repack.8580/
Sorry, I didn't understand. It's for unarchiving the database.
Look at this page. After leaving a comment you have the passwords visible now