The ideal time for treating young developing scars from any cause, including those from chickenpox, is between the end of week four (when the scars are strong enough to withstand treatment) and the end of week twelve (after which the scar is considered "mature') and the typical improvement ranges between 60-80%. If treated during the 4-12 week window there is chance for greater improvement and occasionaly even erasure of the ilmminent scar. So, you would be wise to consult with an experienced, board certified cosmetic dermatologist scar specialist asap. Since chickenpox scars are typically quite box-like, often a treatment, such as the use of an agent, such as TCA, or light electrodessication needs to be used to make the side walls of the scar less steep and more "rolling," and subcision can be used to elevate and smooth the central portion of the scar. Finally, manual Dermastamp microneedling (no need for the added expense and risks of RF microneedling) can be used to better blend the surface of the scar in both color and texture with the surrounding skin. A word to the wise. You will no doubt be hawked this or that expensive fraxel lasers or RF device for treatment. Be aware, however, that the hard science to support the use of these "bells and whistles" gizmos lags well behind the heavy marketing and social media buzz to promote them. Bottom line: The earlier you seek treatment, the better. Hope this helps and best of luck.