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Phrase(s): not miss much 1. [and] not miss a thing
Inf. not to miss observing any part of what is going on. (Usually with do as in the examples.) • Ted doesn’t miss much. He is very alert. • The puppy doesn’t miss a thing. He sees every move you make. 2. Inf. not to miss experiencing something that really was not worth experiencing anyway. (Usually with do as in the examples.) • I missed the big sales meeting last week, but I understand I didn’t miss much. • Bill: I didn’t see that new movie that is showing at the theater. Tom: You didn’t miss much; it was pretty bad.
McGrawhill's American Idioms And Phrasal Verbs