Every case is different as everyones circustances are different, and so no one is in a position to tell you how much your claim is worth without seeing your medical records and knowing your personal circumstances.
There are 2 parts to the claim, General damages which covers the actual injuries and includes a payment for pain and suffering, and special damages which inlcudes your out of pocket expenses, loss of earnings and a lot more besides.
If you have instructed a solicitor, then he/she will be much better placed to give you an indication of what the value of your case is.