Dear aspirant

The class 12 percentage required for NEET 2021 exam is separate for each category and can be listed as under. NEET eligibility marks in class 12 to be considered are aggregate marks only for PCB subjects

UR - 50%,

OBC/SC/ST - 40%,

PWD - 45%

so your marks should be more than 40% in pcb aggregate. Like if you have total 300 marks for this three subject you must have score more than 129 marks for being eligible.

you can check whole eligibility criteria from link below

https://medicine.careers360.com/articles/neet-eligibility-criteria/amp

Hope it's help you

thank you