Hard to say without seeing the extent of the damage, but usually its best to have a professional assess the damage in person to get the most accurate info in terms of whether it's fixable and how much it might cost.
When a wheel repair shop fixes a wheel correctly, welding, sanding, painting and polishing is involved. What I would do is price out the cost of a new wheel, as well as the cost to swap the tire and TPMS sensor over, plus mounting and balancing. If the total cost of the curb damage repair exceeds the cost of the new wheel, I'd just get a new wheel - but the chances of that are fairly low.
If you can live with the damage and the tire isn't leaking air, I might also suggest just living with it. If it was curbed once, it'll probably be curbed again (ask me how I know.. lol).