I am getting 4 wisdom teeth pulled. how long will it take?

Depends: Sedation likely? Depends on location and degree of impaction and accesability. You could likely plan on about 2 hours from start to finish if sedation, but the actual time to get them all out could range from 20min to 1.5 hrs. Ask your provider.

It can vary: The time required to remove four wisdom teeth can vary depending on several variables. Removal of an erupted wisdom tooth sometimes can take as long as an impacted one. The position of the tooth, physical size of the patient, anxiety level, whether or not sedation is used or not, and experience of the surgeon and his surgical technique are all factors that can influence how long the surgery is.