Generally, yes, everything about the quilt is judged including the binding and the hanging sleeve. While you say you are "awful", this is a perfect opportunity for you to improve your skills and practice. Then do your best!
There's a lot of interpretation in terms when it comes to quilt shows.
What is traditional to one ... is not traditional to another!
The best guidance anyone can give you is to go back to the Chairperson of the show and ask your questions.
Know what you want to ask and be specific.
Don't assume anything!
You may be able to garner the quilting score card. Maybe not.
To me, seeing my quilt hanging at a show is the prize!
Yes, it's nice to win, but I also know that I can't win every time.
And I know that it is only the opinion of Judge(s) on that day.
Sometimes I learn more from my self-judging and seeing the differences between my quilt and the others in the class. Sometimes too, there are opportunities to discuss with other quilters and learn tips that can help improve my skills.
No matter what ... I highly recommend your moving ahead with your thought ... and make your quilt to enter!
Good Luck!!!!!!!!!