BuddyPress.org

So the folder plugins/buddypress/bp-themes is missing from my server, and I don’t have a backup. I recently took over this site from someone else who clearly didn’t know what they were doing. In any case, the whole thing is causing problems for me across the site. Does anyone know how or where I could access the contents of this folder or perhaps re-install BuddyPress without losing all of the data from past users that managed to register with the site?

Apologies if this is obvious, but I’m relatively new at this.