If you can feel it via "fingernail", then you need to fill that area up to or beyond the current level of the clearcoat if only the clearcoat was damaged.
Take a magnifying glass and look at it close up with high intensity lights to see if the scratches are colored as the same paint. If so, it's only a clearcoat touchup. If it is not looking like the paint color or you can see any primer, you need color/clearcoat touchup.
The color is a very thin application, the clearcoat is the heavier application used to "protect" the color finish.
You need to apply a very fine amount of color (if needed) let that cure fully, then add the clearcoat up enough to get it a hair above current clearcoat. Give enough time for it to cure since you do not have a paint booth, you can use a hair dryer set to warm and do not overheat the paint area, but a least a a 6x6 area to keep the panel areas even to aid the cure process.
Then, wetsand only that area first to level, then polish to blend. I use paper grits down to 12,000 grit on the final pass to help blend it.
Once you compound and polish the area, you'll never see it again!
Regards,
Deanski