It depends on the factors that are important in your case. For example, if you have a relatively simple case where liability is clear, it was the other party’s fault and they’re not contesting that, and your injuries are not very serious, then your case can be settled relatively quickly, within a few months.
However, if they are contesting liability and especially if a lawsuit would need to be filed. If the injuries you have are very severe, you would need treatment for a long period of time and serious treatment may be surgery, other things and also considering your pain and suffering. Whether your injuries would be healed essentially 100% in a short time, you have lifelong injuries, all these sorts of things, whether expert witnesses would be needed. If it’s that type situation, the case could go on for six months, a year, even many years.