How bad is it? It's a poor man's "Xanadu," which wasn't much to begin with.
Should you see it? Yes, perhaps as part of a Linda Blair movie fest.
Linda Blair shows up frequently on this blog. This is her roller skating movie. That's pretty much it: 1970's disco music and kids trying to save their local hangout from closing, with lots of big hair, weird clothes and overage "kids" dancing on skates. It's minor trash.