It looks like you have a Pop-OS repository added in your sources.
I am sorry @zGnOmaha , I failed to spot this in the very screenshots you posted...
Since you must have added the repository at some point, that is what caused the partial upgrade to happen.
It just replaced your Zorin OS desktop.
What you might try if this was not your intention:
Remove the POP-OS Repository using `Software & Updates~ > "other software"
Once done:
sudo apt install --reinstall zorin-os-desktop