The answer depends of several factors, including the type of injuries you suffered and how willing the other side is to settle the claim. Initially, your injuries must be assessed and then treated. The length of time is very much dependent on the type of injuries involved and how quickly you heal.
Upon completion of treatment and documentation of all your damages assembled, settlement negotiations begin. Every effort is made to resolve your claim as fast as possible, with the goal being to obtain the full compensation for your injuries and losses deserves.