Hello Tarun

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

However 500+ is a score to get a government college and you have score nearly 500 .You a slight chance of getting a 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