There is no reservation for the freedom fighter quota in most of the institutes. You can find the reservation like SC, ST and OBC and physically handicaped. Now if in your state this freedom fighter quota is applicable then you can apply through this quota and in chattisgarh there is 3% reseravtion for the freedom fighters as per the sources. So you can apply through that but the cutoff marks for that quota will be released by the respective admission authority of that state. Refer the link below to know more about the cutoff marks and the admission process.

https://www.neetprep.com/exam-info/neet-chhattisgarh-seat-intake-quota-cutoff-participating-colleges