They should be excised, but it will ot be easy to get great results without any scarring. Please see a different plastic surgeon than the one who injected you. It is for this readon that we generally do not inject the lips.
You are probably going to have it surgically excised. Sculptra is a good product, but it is not indicated for the lips, or eyelids, for that matter.
You may need to have the nodules removed by a surgeon. I recommend seeing a different surgeon than whoever initially treated you.
Sculptra should not be injected in lips. Too often nodules will form. They need to be excised. I would see another surgeon. Hyaluronic acids should be the filler for the lips.
Sculptra is a wonderful product but it is ill advised to inject Sculptra into the lips. How many days ago were you injected? Are you massaging the treated area? Please find a board certified dermatologist and see if the nodules can be injected with Kenalog or removed. Please let me know what happens.