Hello student, 
You have not mentioned you region which you belong to. With a score of above 480 in general category, you have chances of procuring a seat in the government medical colleges when comparing the results of previous years. But, it depends on your region too. Also, one thing to keep in mind is that scores and ranks vary each year with difficulty level of the question paper and availability of seats. However you can go through the following link to know about the cut off's and ranks for the previous years and calculate your chances of selection 
https://medicine.careers360.com/articles/neet-cutoff-ap
Hope this will be helpful...