Contact a personal injury attorney as soon as you can after an accident. Evidence can disappear, witnesses will start forgetting things, make sure you have someone fighting for you as soon as possible.
The insurance company is required to pay you the fair market value for your vehicle, so if you are upside down in your vehicle loan you may be left with the balance on the vehicle even it is totaled unless you have some sort of GAP Insurance. Talk to your agent!
In South Carolina, you only get attorney’s fees by statute or contract. Unless it is written into a contract that is breached or one of the very limited situations that provides for attorney fees by South Carolina Statute probably not.
There are a lot of factors that go into case value including but not limited to: severity of injuries, length of time in a hospital and follow up treatment, lost wages, permanent impairment to the body and availability of insurance proceeds. Without knowing these things, someone is really just guessing.