Hi Sachin

Based on previous year cut off marks, It is hard to get a seat in Govt. colleges of TamilNadu for these marks. Because the previous year cut off marks required for getting a seat are 588-643. If your score is above 500 you can expect a seat in Govt. colleges. Otherwise, you can try other colleges. Every year cut off marks will also vary.

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

All the best.