Hey raktim.

Anyone who has completed graduation in any course orare in their final year or awaiting results are also eligible to appear for UPSC preliminary Examination.

The candidate must must have attained 21 years of age. Also, he or she must not have 32 years of age as on August 1, 2020  and should be an Indian citizen. if you tick off all these boxes you are eligible to give upsc exam

hope this helped

all the best

for more information about his please go through the following link:

https://competition.careers360.com/articles/upsc-ias-eligibility-criteria