not miss much
To be exceptionally alert to what is going on around one. Despite the boss's rather hands-off approach to managing the team, she doesn't miss much of what goes on around the office.
not miss much
and not miss a thing 1. 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.
miss much
see under not miss a trick.
not miss much
be alert to or aware of everything that is happening around you. informal