hello aspirant,

its quite tough to say the qualifying cutoff because each year the cutoff changes due to many factors like difficulty level,total number of students apperaing for exam etc.but with previous year analysis and data the expected  qualifying cutoff for 2021 for jee advanced could be:

General(crl):90-95 percentile

GEN-EWS:70-75 percentile

OBC-NCL:70-75 percentile

SC:50-55 percentile

ST:40-45 percentile

PWD:1-2 percentile

for more info about previous year cutoffs check: https://engineering.careers360.com/articles/jee-main-cutoff

hope thishelps,

thankyou.