How bad is it? It's a dumb kid movie and reportedly worse for fans of the show.
Should you see it? Nope.
This is a live action version film of a children's television show that I've never seen, but the fans of the show REALLY hate this film. An alien criminal seeks an ancient artifact so he can take over the town, but he's stopped by boy hero Ben Tennyson. The aliens are cheap, the effects very poor, the fight choreography dreary. Lee Majors and Robert Picardo show up long enough to collect checks.