There are many threads on this board about what to do in NYC and where to eat so have a scan through.
I'd also have a look at this website -
https://www.nycgo.com/ - and other sites such as Time Out
It's hard to give tailored advice as we don't now what your interests are and what your budget it. Also when are you visiting and how long for as that will to a very great degree affect what museums, shops and bars etc will be open.