Live iPhone stream to laptop
It is possible to do, but I do not see an option for a wired option. Please see EpocCam WiFi Virtual Webcam by Kinoni on the App Store

OR

Connect your iPhone to one a USB port on a Mac, then launch QuickTime. From there, you can click File > New Movie Recording, from there, you will be given a record button with an arrow beside it. Click the arrow, and under "[iPhone Name]" select your iPhone and start recording. 



Disclosure: I have no connection with the app whatsoever. It’s just what was found in a quick search.