How bad is it? Dreadfully unfunny "comedy" aimed at kids. bad is it?
Should you see it? Only if a fan of the stars or of man-in-a-monkey-suit films.
A talking chimp named Bonzo (a nod to "Bedtime for Bonzo," which starred President - in 1987 - Ronald Reagan and a chimp) is kept from bad guys by Dom DeLuise, Jimmie Walker and child David Mendenhall. Herbert Lom plays a sheriff. There's a lot of stereotyped Africans, lots of guns pointed at children, a scorpion attack and the monkey flies a plane and sings a child to sleep. The monkey is played by a little person in a monkey suit. The intended jokes do not work, though small children just might be amused.