hi harsh,

jee main cutoff will be declared on april 30 when second session of jee main exam will be completed.  i think your score is good to qualify jee main on the basis of previous years score . however cut off varies year to year. for eligible to jee advance exam you need to score 75% in 10+2 exam.

https://engineering.careers360.com/colleges/list-of-government-engineering-colleges-in-delhi

please go through the link. it will satisfy your query.