Can someone please recommend the best mouse to use at work with usb after r hand carpal tunnel release surgery. I'm afraid of losing my job please help!

Combo. After carpel tunnel release you should be improved. Try a combination of track pad and mouse. You are trying to alternate and give enough time to rest between movements. Ask if dragon naturally speaking could be used.
Mouse. keyboard. Shoes. Chairs, matresses... All are very individual. Try going to a big store and trying them out , with a return policy at the store, good principles are proper desk and chair height, avoidance of wrist extreme flexion extension and deviation. But no one mouse is suited for all. Hand size, incsion location, who you are, too many factors go to a store and see dont buy what someone says is "best".