I call a scratch something that if I drag my finger nail over it the nail catches on the "trench" of the scratch where material was significantly removed.

A "scuff" is when there's a mark but a fingernail dragged over it may feel the scuff but it doesn't catch.

For an actual scratch I go with filling the area with the same color paint and then wet sand down the worst of it with 600 used with care to only sand the "crown" of the paint patch. Then go to 2000 to blend and remove the 600 scratches. Finally some automotive polishing compound followed by a "cleaning" car wax that has a light super fine polishing compound in it. Another product that I got recently that I still need to try on some scuffs on my truck is ScratchX. It's got lots of good online reviews as a scuff buffer outer.

For a simple scuff I'd suggest the same ScratchX product. Or if you have it try some Mother's Mag Wheel polish. Or one of the milky white "Cleans and Restores While It Waxes" car wax products.