The dark pigmentation around your chicken pox scar can be improved with Melarase creams. The indentation may require surgical excision or scar revision.
Raffy Karamanoukian MD FACS
It may improve with subcision. This is when we make the skin numb, then gently release the top layer of the skin from the scar below. To make it lighter, you will need sunprotection, combined with skin bleaching agents applied directly to the region that is darker. Looking at your entire skin shown in this picture, I think you would do well with a series of chemical peels done about 4 weeks apart. This answer is an estimate of what you could have done but keep in mind the photos are not a real substitute for face to face examination. We would need to see you in the office for a more precise treatment plan.
Hope this helps!