I too am eager to take a crack at fixing a scratch! But as noted that bag’s a fake.
My only perplexing problem at this moment is one I created. A vintage crossbody that I’ve been working on for months now had a terrible ink stain on the lining. I thought I got it out but when I dunked it (A last ditch effort to get rid of the Cigarette smoke smell) I transferred the ink to the leather! It seeped right through! Now I’ve got a big ink spot on leather that I didn’t have to begin with.
Ink stains are notorious. You may have to dye the bag to cover the stain.