Dear Shubham, 

You should understand that each year the cut-off changes on the basis of the level of difficulty of the exam, the performance of students, available no. of seats etc hence nothing is concrete until and unless the results are declared officially but you can get little help from previous year's cut off if the previous year's trend occurs this year as well.

The cut off for colleges in chattisgarh from 85% state quota in obc category near your score:

govt medical college, bilaspur: 487

govt. medical college, rajnandgao: 458

govt medical college, ambikapur: 449

Late Shri Lakhi Ram Agrawal Memorial Government medical college: 465

Late Baliram Kashyap Memorial Govt. Medical College Jagdalpur : 467

you can verify the stats from the link given below

https://medicine.careers360.com/articles/neet-cutoff-chhattisgarh