I assume u are off work, and have been for at least 7 days, are now receiving the weekly WC payments.
There is typically no discussion of settlement until you have reached MMI, which is Maximum Medical Improvement. This is determined by the doctor.
At MMI you will be released from the doctor's care. If you are able to return to work, at this point, there is the potential, depending on your injury, for a PPD (which is Partial Permanent Disability) settlement. The amount of this settlement would be determined after you have reached your MMI. It is determined by your doctor's rating and by a state schedule. (This is why there is a fallacy in the advertising of those daytime t.v. attorneys who promise to "get you more.") You would get a one time settlement and be back at work.
If you are unable to return to your job at all, it usually indicates that it is a more serious injury. The same process will apply, and you will be able to get a fixed amount settlement based on these ratings and schedules, and WC will also be paying "future medical" for this particular condition.
We'd need a lot more specifics to give you a more specific answer. Like what is the injury, how long have you been off?