You can copy and save the essential folders from your Home Directory. Personal files like Documents, Pictures, etc.
And your hidden files like .config or applications specific folders. All I do is compress them, then save them in the safe location.
In terminal run
sudo dpkg -l | awk '/^ii/ { print $2 }' >package-list
Move the created file to Back Ups and then move it to the New Installation of Zorin OS.
In the new installation, open terminal and run
sudo xargs apt-get install -y < package-list
That will install along down the complete list of applications you have installed currently.