If you want to login to iCloud on Windows then you must follow these steps:-
1. First open your Windows PC and then download and install the iCloud for Windows app from the Microsoft Store app.
2. Then click on Open to launch the iCloud app.
3. Now click on Yes to allow it to run on your Windows.
4. Then enter your Apple ID and Password and then click on the Sign in button.
Read More:- https://techzeel.net/icloud-login/