Since I dont know about your state, I can only give a rough estimate of cut-off marks.

NEET 2016 UG Entrance Examination - 500+ was a safe score to get admission in a good government medical college.

NEET 2017 UG Entrance Examination - 500+ was no more a safe score. 550+ was considered safe to ensure a seat in a decent government medical college.

NEET 2018 UG Entrance Examination - Cut off reduced by 10-15 marks (as question paper was comparatively difficult). 540+ was a safe score.

Comment your state name I can give you the details about the previous year cut off and how much you should aim for to get a government medical college in your state.

Thank You

Best Of Luck

Hii 

Its hard to say the neet cut off but i ll say you in case of marks 

119 or less with this score aspirant is not a eligible for getting admission in neet 

120-300

In this range of score chances are very less for govt college under state quota and but you have chances in DEEMED university

301-450 

In this set of range score  ,chances are lees for government college but there is chances for private colleges under state and national quota 

450-550

In this score chances are there for government college 

550 plus

Any college you will get in all over india wwith decent chances 

Regards