bbPress.org

I don’t know how your going to find your forums in FTP , but you can go to each forum and click view and that should take you right to the forum.

you also see the whole forum archive if you go to yoursite.com/forums.

if you dont have pretty permalinks activated in settings>permalinks in the backend of WordPress then its yoursite.com/?post_type=forum

other than that make sure you correctly created your forums and subforums correctly.