I can’t help you with procedural mesh generation, but I can tell you that the FSphere type is merely the mathematical representation of a sphere, i.e. a center point plus a radius. Beyond that it holds no geometry information, such as a triangulation into polygons.
That being said, you can use an FSphere instance as the basis for creating your own spherical meshes. There are many ways to triangulate a sphere, and I’m pretty sure we already have code for that. Perhaps take a look at the BSP code for sphere brushes until someone else can provide a better answer
I don’t find any of this in the documentation. In fact, FSphere is not a graphical representation. And PrimitiveDrawingUtils is not mentioned in the docs. Not very easy how to do this when you are a beginner, really…