Hello aspirant,
The cutoff scores change every year for all colleges depending upon various factors. According to previous years data, the cutoff score for Government Dental Colleges for general category students was 470. Since, you have scored 500, you have a fair chance of getting a seat into Government Dental College of Kolkata.
You can use the following college predictor link to check which are the possible colleges you can get a seat in for BDS: https://medicine.careers360.com/neet-college-predictor?icn=qna&ici=qna_answer
NEET Rank Predictor - Know your expected NEET 2020 Rank by using the C ...
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile