I want to go back to Windows 10

Hello,
How do I get from Zorin back to Windows 10?
Zorin is not really running well and I don’t want to use it anymore.

Honestly, not sure how Microsoft is doing Win10 Installations, these days.
Back when I used Windows, I held on to XP pro until only a couple of years ago. That was installed by disk.
This is what Microsoft says on it:
https://www.microsoft.com/en-us/software-download/windows10%20

No, what I mean is how do I boot from a separate disk in Zorin?

This depends on your Hardware- I believe you are working with a Surface Notebook.
https://support.microsoft.com/en-us/surface/how-do-i-use-the-bios-uefi-on-surface-devices-0f5953d2-befa-3617-a0e5-9735945af774

This would have been the same method you used to boot the installation media for Zorin.