If you don't see any forums listed, then that means you are not a member of any of the N*Groups here at N*Raged. To become a member of a current group, or to join a group, click on the N*Groups link at the top of the page.
Once you are a member of an existing group that has a group forum, or you create a group and a group forum, then you will see that groups forum listed here.
If you have already joined a group and have seen a group forum here before, but it's not here anymore, then either the group forum has been removed, or you have been removed from the group. Click on N*Groups to check which one.