Hello Ashish 

Cutoff every year changes due to certain factors like number of students appeared for exam, difficulty level of the paper, highest marks obtained and many more. So one can't  really predict about this year's cutoff as well, only idea can be made by analysing previous years cutoffs. The cutoff for ba llb bhu 2018 is as follows :- 

General- 616 (cutoff rank) 215 (cutoff marks) 

OBC - 350 ( cutoff rank) 181 (cutoff marks) 

SC- 155 ( cutoff rank) 136 (cutoff marks) 

ST - 105 (cutoff rank) 55 (cutoff marks) 

Hope it helps :) 

All the best :)