Make sure the type is set to Mac OS X and the 64-bit version is selected. For example, “macOS Big Sur” as shown below.
Here, give a valid name for your virtual machine.
Click on “New” in the VirtualBox software. Now, you’re ready to create your virtual machine.
After that, click on the VirtualBox Extension Pack file that you downloaded.
How to Install macOS Big Sur Using VirtualBox on Windows Performance will depend on how fast the computer is that is running VirtualBox, so obviously the better the PC the better that macOS will run virtualized on it.