How do I fix uneven camber on a Schumacher Neon FT?

If the left and right wheels on the same axle have different camber, set them to match before changing your handling setup. Measure on a level setup board with the car at running ride height and the suspension settled. The Neon FT’s kit baseline is -1.5° front and -2.5° rear, so different readings front to rear are normal.

Check that the car sits level and that the wheels, suspension arms, links, and ball joints are not bent, loose, or binding. Then adjust camber using the appropriate upper-wishbone setup and remeasure both sides. The Neon FT’s kit wishbones provide the baseline camber; optional wishbones allow other camber settings.

If you meant the front camber differs from the rear, that may be intentional. What readings are you getting on the left and right at the front and rear?