Your lawyer should be able to tell you if you have a legal claim that has merit. If it does, your lawyer will likely ask you to sign a retainer agreement. A lawyer cannot represent you without a written retainer agreement. Once that agreement is in effect, your attorney should start gathering the information needed to try your case.
No competent lawyer should tell you what your case is worth, at the first visit. To arrive at a figure for damages, your lawyer will need to determine the extent of your injuries, including pain and suffering, disability and disfigurement, the cost of medical treatment and lost wages.