VirtualBox is a full virtualizer available on macOS, Windows, and Linux. When you install an operating system in VirtualBox, you're not dual-booting the new OS alongside the original one.

To install Fedora on Oracle VM VirtualBox, download the ISO File of Fedora, Install the VirtualBox, Set up VM, Boot with and Install Fedora.

By following these steps carefully, you should be able to successfully install and run macOS on your Windows machine using VirtualBox.