Hello, Pragati Saxena 

It will be difficult for me to say that you will definitely get a government college because cut off varies from year to year depending on category home state etc 

However, 550+ score is good to get government college and you are near that you have a good chance of getting government college

I'm providing you a link which can help you

https://medicine.careers360.com/neet-college-predictor

Hope this helps you if you have any queries you can add in comment section

Thank you