Abhinav, you haven't mentioned your Category. Neverthless, in 2017, under State Quota, the cut offs for IGMC for various Categories have been as follows:

General Category: 545

SC:474

ST: 450

Now this is 2017 data and you will be appearing for NEET 2020. And cut offs change every year and are dependant on various factors such as no.of Candidates appearing for the exam, no,of Candidates qualified, top NEET score and difficulty of the exam. So if you belong to General Category, you will need atleast 575 and if you belong to any of the Reserved Categories, you will need 500-525. For any guidance during counselling and admission, you can use our MBBS Companion: https://www.careers360.com/mbbs-companion