Hello,
With your marks in JEE Mains 2020, your rank should be around 25000 to 30000 in the common rank list. As you are from oBC category, you can get seat in NITs  and GFTIs for civil engineering.

For BIT Mesra, you need to have around 150+ to get a seat. If you are from Jharkhand and as an oBC, you might get seat in the last rounds of JOSAA counseling.

Please visit this link to use the JEE Mains college predictor by Careers 360 to know the probable colleges according to your rank
JEE Mains college predictor

Hope it helps

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