my obc rank at 125 marks in mhtcet 2020

Actually due to variation in toughness of paper rank prediction is not easy. But it's can be said that you have scored pretty good and with the marks you can get top branches in some top to moderate Colleges with your quota. Now if you consider a prediction based on previous few years data with 125 marks your rank would be in between 2000 to 2400.

Hope it would be helpful.