This article explains how to flip the camera on a Surface Pro (and other Surface devices).
How to switch between the front and rear cameras on the Microsoft Surface Tablet
The Microsoft Surface Pro has a front-facing camera for video conferencing and a rear-facing camera for photos and video. Apps use the front-facing camera by default.
The Camera app, which comes with Windows 11 and Windows 10, is the default app for taking photos and recording video on a Surface device.
To flip the camera in this app, tap the camera icon in the upper right corner of the program.