Greetings dear aspirant

I'm assuming that you are asking about NEET state rankings for the year 2020. For the marks range of 511-520, the All India Ranking in the year 2020 was between 38736-37780. In the years 2018 and 2017, the rank range was between 17816-14630 and 22372-18876 respectively. These are the All India Ranking ranges for the respective years.

You can have a detailed look at the Rank vs Marks range as well as get to know the cut-off's for all the colleges in Karnataka from the below links:

https://medicine.careers360.com/articles/neet-result-marks-vs-rank/amp

https://medicine.careers360.com/articles/neet-cutoff-karnataka/amp

Hope this helps!!

All the best for your future career