I GOT 87.8 PERCENTILE IN FEBRUARY ATTEMPT 2021 IN JEE MAINS,WILL I GET SEAT IN THAPAR UNIVERSITY?

Hi, according to your JEE Mains Paper-1 percentile your Overall Rank is expected to be in between 124806 - 140300. You have not mentioned which category you belong to, so assuming you belongs to General Category you have chances of getting seat in Thapar University based on previous year's cut-off rank.
Tech Biomedical Engineering
2019 - 330280 Closing rank

B.Tech Biotechnology
2019- 286781 Closing rank

BE Chemical Engineering
2019- 231981 Closing rank
2018- 213608 Closing rank

BE Civil Engineering
2019- 219869 Closing rank
2018- 146795 Closing rank

You can check out more details about this college using below link.
https://www.careers360.com/university/thapar-institute-of-engineering-and-technology-patiala

You can check out your rank using rank predictor.
Rank Predictor-
https://engineering.careers360.com/jee-main-rank-predictor

Some useful links are listed below to know cut-offs of JEE Mains.
Cutoff-
https://engineering.careers360.com/articles/jee-main-cutoff
Official cutoffs for NITs, IIITs, IITs, CFTIs-
https://josaa.nic.in/Result/Result/currentorcr.aspx

All The Best.