heres how to download it
Step 1 go to archive.com and get Windows XP Professional and here's the link: https://archive.org/details/WinXPProSP3x86
Step 2 download Oracle VM Virtual Box
Step 3 click new
Step 4 add the ISO that you downloaded
Step 5 add the Product Key
Step 6 finish it up
Step 7 set it up
Step 8 Enjoy!