it's not easy easy, but a lot of people do it so there's a lot of help online. this theme on xfce and some windows xp icons will get you pretty far. https://www.xfce-look.org/p/1479483/

edit: i'm pretty sure someone made a script that changes most common linux builds to a windows-looking machine. maybe on here or maybe lemmy? edit2: it's in this thread lol