Hello,
With a NEET score of 550 you'd land up in other medical colleges of maharashtra as for lokmanya medical college cutoff is around 580+ for general category.

With a score of 550 you can get colleges like:-

Government Medical College, Latur

Government Medical College, Chandrapur

Dr Vasantrao Pawar Medical College Hospital and Research Center, Adgaon

However these information is based on last years cutoof and as cutoff changes everyyear depending on factors like difficulty and number of candidates and current COVID19 situation etc.

You can use careers360 college predictor to know the colleges you can get at your NEET score;- https://medicine.careers360.com/neet-college-predictor