greetings,

Scores in one attempt of NEET do not hamper the eligibility of a candidate as such, he can definitely reappear in 2021and try to improve his scores and get a good MBBS college. As for age, since there is no age limit for appearing so that argument stands nullified as well.

Best of luck to him.

You haven't mentioned your friend's 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 100 it is difficult for a seat in any course that conducts admission based on NEET score because your friend doesnt qualify in NEET. . But if your friend has decided about studying Medicine, your friend has to reappear for NEET in 2021 and score real good. That will be the only option because with this score, your friend cannot even get Private Medical Colleges. So your friend  may have to consider appearing for NEET 2021. If he/she want to reappear for NEET 2021, he/she can prepare with the help of our NEET Knockout package: https://learn.careers360.com/knockout-neet-may/ . But this will have no bearing on NEET 2021. As long as your friend meets the eligibility criteria, your friend can appear for NEET 2021.