Thanks A2A @mallikarjunaprasanna2002 !

With 470/720 marks in NEET 2020 may fetch you:-

Overall Percentile is: 94.6 - 95.1

Predicted Rank is: 72811 - 84961

NEET rank Predictor

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

Check out the cut off trends in Tamil Nadu since past years:-

https://medicine.careers360.com/articles/neet-cutoff-tamil-nadu

470 marks may not bring you seat in government Medical colleges in all india quota 15% going by the previous year trends. With the rural quota it's just difficult to say as it is not useful in many states. Despite that you can use the below link to predict your colleges in state counseling:-

Hope this helps !