Greetings dear aspirant

Well, there is no definitive answer to your question, because the rank to mark relation has been fluctuating with each passing year. The cutoff trends keep changing every year and depend on the number of students attempting the exam, number of available seats, difficulty level of the exam, etc. However,an average score of about 200 will get you a rank under 5000. This is just a prediction based on the previous year trends and is not accurate and can change this year. It's just to provide you a rough idea.

Hope this helps!!

All the best for your future career