Hii aspirants 

In All India Category you should score atleast 65 percent marks along English as one of the subject. 

To know morw  about what percent are required on 12th for nirma university for bba +mba course you can visit the site of career 360 where you will get all the detailed information regarding admission, eligibility criteria for nirma universitiy in bba + mba course. 

Here is the link to visit the site 

https://www.careers360.com/university/nirma-university-ahmedabad/bba-and-mba-integrated-course

I hope this will help you out

Good luck