If the scratches on your 2013 Challenger are small and don't seem to go through the clearcoat, then you can use a scratch repair product like Fixer, Essence or Reflect to try and fix them. However, it's not necessary to use all three products in sequence. The choice of product will depend on the severity of the scratches and the type of finish on your vehicle.
Fixer is designed to fill in light scratches and scuffs, so it might be the best option if the scratches are not very deep. Essence is a polishing compound that can help restore the shine and luster of your paint, so it might be useful if the scratches have dulled the finish. Reflect is a protective coating that helps prevent future scratches and provides a long-lasting shine.
To determine the best approach, it's best to start with Fixer to see if it can fill in the scratches, and if it doesn't work well, you can move on to Essence or Reflect to try and improve the appearance. Keep in mind that even with the best product, it may not be possible to completely remove the scratches, and you may need to have the paint professionally repaired or repainted.