The PS5 side panels would be modeled using boundary surfaces (or whatever the heck Fusion360 calls them, every CAD software calls it something slightly different). Essentially you need to model the edge shape and then various guide curves across the surface that the CAD software then will fill in with a continuous surface. That said, surface modeling is very much an advanced technique within CAD softwares, don't be surprised if you find it incredibly frustrating to learn.

To do this you are going to need to measure points that will allow you to create the guide curves. The least work would be 3D scanning of some sort that would create a point cloud that you can use to construct the surface, there are some phone based solutions available these days, especially if you have an Apple device. Alternately you can measure it manually, profile/contour gauges are pretty cheap (heck you could probably print one good enough), there are many ways to do it depending on the equipment and expertise you have.

That said, for something like this, I'm doing it the lazy way. A tripod doesn't wobble, design it with some adjustability in the legs to get it fairly level, pop on some rubber feet or double sided tape to keep it in place and move on.