How long does it take to fry a 9.5 lb turkey breast?

Depends on whether it's stuffed/unstuffed, frozen or thawed, and how you're cooking it (in a bag, covered, etc.), what temperature you cook at, etc.

Turkey needs to reach a temperature of 170 degrees at the breast and 180 at the thigh. Any more and you risk drying out the meat. Generally, turkeys are cooked at 325-350 degrees in an oven and have their own thermometers, but you should have your own as they don't always work.