Hello Twinkle,

The cutoff for government medical colleges in Delhi for MBBS is above 600 marks in neet for all India category and for state quota students the cutoff is usually around 500+. So there are low chances to get a seat in any government college with these marks however you can get admission in deemed medical universities. 

You can check what colleges you'll get exactly with these marks by going through the link of neet College predictor tool given below.

Https://medicine.careers360.com/neet-college-predictor

To check previous year cutoffs of colleges of Delhi go through the given below link -

Https://medicine.careers360.com/articles/neet-cutoff-du

Good luck!