Tom's Hardware published a tutorial about installing Windows 10 on a Raspberry Pi 4.
How to Install Windows 10 on a Raspberry Pi 4
The Raspberry Pi is commonly associated with Linux operating systems such as Raspberry PI OS. But what about running Windows 10 on your Raspberry Pi? Officially, Microsoft’s only operating system for the Pi is an old version of Windows 10 IoT Core, which just lets you execute Visual Studio code on the computer but doesn’t work as a standalone OS with a GUI (in other words, no “windows”). However, the lack of support from Microsoft hasn’t stopped some ambitious developers from finding a way to run a full desktop version of Windows 10 on Raspberry Pi.
How to Install Windows 10 on a Raspberry Pi 4