Thank you for your question. I would see a dermatologist to see if there is a lightening cream to help even your skin tone.
A bleaching cream could lighten the dark areas containing hydroquinone ,steroid, tretinoin .This can be used initially and if not totally successfully the area can be lasered with an erbium laser to a depth of 200 microns. This will result in temporary stabbing and lightening of coor. But this will heal well within a few weeks. Good luck
Improving dark scars on the face
For dark scars on the face, I recommend a combination of Plato's Scar Serum, light chemical peels, and Melarase creams to help smooth out complexion.