Chicken Pox afflict single cells which were destroyed, but it does not lead to scarring. It heals completely without any complications when the blister keeps intact until the crust falls off.
Scars can only develop when wounds caused by scratching get infected by agressive pyogenic bacteria (streptococci, staphylococci). These germs do not only attack single cells like the the virus causing the Chicken Pox (Varicella zoster). Instead, they attack the whole epithelial tissue. The body reacts with an inflammatory reaction which is responsible for redness, heat, swelling and pain.
The epithelial tissue consists of keratinocytes. When they get destroyed, the body tries to close the wound quickly. Instead of building new keratinocytes, the body uses connective tissue cells (fibriblasts) having their origin in deeper layers of skin. Those cells are responsible for scar tissue.
You may use thick zinc oinment to accelerate desiccation of the blisters. Keeping the ointment in the fridge can help sooting the itching. I wish you to get well soon. :o)
Poor you! What a horrible thing to have at your age. Unfortunately the outcome is varied whatever you do. (except try not to scratch)
Try not to upset yourself, and remember you are in an enlightened age. There are various treatments around to make your skin smooth as silk.
Oh ya forgot to add : I read online, according to the websites, scars are left not because of the scratching, its the severity of the infection.. I am so worried that my face will be filled with dents! - alicia2828