I scored 264 marks in neet st category.Can i hope to get college in chattisgarh state quota till mop-up ??as there are increase in seats??

Hello Preety,
Although there are increase of mbbs seats this year but if we go by the last year's cutoff list and cutoff rank you won't be able to get any government medical college in your state against the ST reservation and also with state qouta.
Although the least cutoff last year in your category and with 85%state qouta was of 261 marks at Government medical college, Ambikapur in NEET 2018 but the corresponding rank was 239191.
I don't think that you must have gained that rank even when you have scored 3 marks more than the cutoff.
This hear the cutoff are assumed to go high.
I hope this helps.
All the best for the future!!