You haven't mentioned your Category. Nevertheless, the General Qualifying cut offs for 2020 have been as follows:

General Category/EWS: 720-147

OBC: 146-113

SC: 146-113

ST: 146-113

General Category/EWS-PWD: 146-129

With a score of 171, it is difficult for a seat in any course that conducts admission based on NEET score. But if you have decided about studying Medicine, you have to reappear for NEET in 2021 and score real good. That will be the only option because with this score, you cannot even get Private Medical Colleges. So you may have to consider appearing for NEET 2021. If you want to reappear for NEET 2021, you can prepare with the help of our NEET Knockout package: https://learn.careers360.com/knockout-neet-may/