Linux server is only available in QuickBooks Desktop Enterprise, gotlight.
QuickBooks 2020 has system requirements to be followed. It is important to get the best experience as you go along with your book. For more details, please check this link: System requirements for QuickBooks Desktop 2020. Under the Data Server, you can see the availability of the Linux for QuickBooks Desktop.
Since migrating your data from desktop to the Linux server is unavailable in QuickBooks Pro, would you like to install QuickBooks Enterprise? If so, you can go to this link and download it there. Select your country, product and the version. Then, click the Search button. Lastly, click Download.
Here's a sample screenshot:
Then, sign in as an admin user on your server computer and workstations to access a multi-user network. This way, you can use separate Windows 10 workstations.
About migrating your data from desktop and Linux server, you may want to reach out to an IT person who is expertise about converting data to the Linux server.
You'll want to check the new features in QuickBooks Desktop 2020.
Please get back to me if you have other questions about QuickBooks Desktop 2020. I'll be around to assist you further! Take care!