INSURANCE MONEY HELP!

When I was in fourth or third grade my grandma and I got into a car accident that wasn’t her fault. I ended up with back pains and headaches and had to go to a chiropractor. She has been telling me since I was 16 that I had money because of pain and suffering that I would get when I turned 18. I turned 18 a couple months ago and I was wondering how I’d go about getting the money