Several RPF formats exist that are used for graphics, and these can be potentially used for fbx to rpf conversion in the sense of exporting previews or textures from FBX 3D models.
When it comes to exporting textures, the Alias/Wavefront bitmap image format (.rpf) is probably the desired file type. RPF (Rich Pixel Format) from 3ds Max that is used for rendering animations or models. These two share the same file extension, but otherwise contain completely different data.
In either case, you have to select software based on your desired output format and the purpose of your export.