Thanks for your query.
If your scar appears like moles or 'sprinkled ink ', I do not think it should be due to the chicken pox
you mention.It might be Freckles /Lentigenes or Naevi.
You must use a broad spectrum sunscreen to prevent any of the above from darkening.Ideally you should get yourself checked by a dermatologist
and then start medications.Options of scar treatment also vary from person to person.A combination of creams ,chemical peels
and , laser treatments will help you if the scars
are due to chicken pox.
Hope this is helpful,