The film's rather poor, to be honest, but the score is fantastic.
I like parts of the film. I think the "Den" segment is a lot of fun (if a bit lewd), and I like the epic quality of the final "Taarna" sequence. The finale is also lovely, even touching. On the other hand I find the "Harry Canyon" episode sleazy and disgusting, and the robot-secretary love story very sophomoric. But Bernstein's score for all of them is fantastic, no question.
Bernstein had Barry's talent for writing magnificent scores for hokey sf; just think what either could have done with a truly great sf film.
I'd have given almost anything to have heard him score a Star Trek movie. How I wish Leonard Nimoy had hired Bernstein for Star Trek IV instead of The Good Mother!