Turtle Wax Jet Black (was called Black Box)
https://www.turtlewax.com/shop/products/turtle-wax-jet-black-black-box-finish-kit
It's a 3 or 4 step process. Best to use a clay bar to clean the surface first then polish to buff out the scratches and wax to protect it. They have a black detailer spray that you use to buff at each stage. I have a black Harley, black Ford Edge, and a black F-150. Swirls are a fact of life unless you continually keep at it. Best if you use an electric buffer with different pads for wax and polish.