See it if You’re a huge Paul Simon fan and would be happy hearing snippets of his music sung by someone else.
Don't see it if You expect any kind of engaging story or wit or details of Paul Simon’s life that a shallow dive on Wikipedia would give you.
See it if A really good singer who sings and gives you some biography about Simon. Older crowd who like Simon.
Don't see it if It can be slow at times with one sad song after another.