Never mind that this feature is pure family-values propaganda; never mind its idealistic hearts-and-flowers message that telling the truth will make you a hero. For parents, the burning issue ignited by A Goofy Movie is ''Will it buy us 78 minutes of peace and quiet?'' Provided the kids are old enough to follow a wandering story line that centers on single father Goofy's adolescent son Max and his quest for peer acceptance as well as he love of a pert humanoid bitch (in the doggy sense), the answer is yes. C

