Can you be more specific about which cut off marks you are asking for? If you are asking about NEET UG Entrance Examination for MBBS Admission, then you must aim for 540+ for making your chances higher to get a seat in Government College. Admission Procedure starts a week after the declaration of NEET Results.
Comment here your state and I would provide you with the exact details regarding the expected cut off marks for your State (as State cut off is different for different states).

Thank You.
Best Of Luck.