What should you expect once diagnosed with vulvar cancer?

Depends. What to expect depends on the stage (ie extent) and location of your disease. Sometimes cases are managed with just surgery and other times they are managed with radiation and/or chemotherapy and sometimes they are managed with all three.
Vulvar cancer. At your age, most likely you have severe dysplasia (pre-cancer). It will be treated by laser ablation or local resection. Healing will take 6-8 weeks.

Related Questions

What exams and tests is needed to diagnose vulvar cancer?

Biopsy. To diagnose vulvar cancer you need to be examined by your doctor and he or she will need to do a biopsy of where they think the cancer is so that they can prove with tissue confirmation that you actually have cancer.