Most forums have a "Contact Us" link where you should ask these questions of that forum's administrator. Obviously we can't answer much about how another forum runs, unless it's one of ours.

"Awaiting email confirmation," in general, means that they've sent you an email where you need to click a link in the email in order to confirm your email address. This is done in an effort to reduce spam registrations.

If you did not receive such an email, it's likely it went into your spam folder by mistake. Check there and you'll usually find it. Otherwise contact the forum owner through the "Contact Us" link.