I got 98.50 percentile in mht cet 2019 can I get admission in aeronautical branch and in which college

There are very few good colleges in Mumbai/Maharashtra that provide an aeronautical engineering course. MHT-CET gives access to a very few of those like Amity University, Mumbai. But that either is not as good. It is generally advised by almost all career counselors that you should take aeronautical engineering only if you're getting in a well renowned college. If you still want a list of colleges in Maharashtra:

Sandip University

Guru Gram Institute of Aeronautical Engineering

Priyadarshani College of Engineering

Sanjay Ghodawat University.

These are the top in Maharashtra, all the best!