How do i move my forum on my server
 

right now my forum is just installed in the root folder on my server ie. site.com/index.php

that would link right to my forum

i'd like to have it in its own folder ie. site.com/forum/index.php

is there anyway to do this easily?

Create a New Folder via cPanel, it's equivalent, or FTP. Then move all the vBulletin files into that folder -- simple as that.

and update your settings in the acp.