This can happen on certain Windows computers when trying to install the latest version of Final Draft 13.
To fix the issue, download and open this installer for an older version of FD13:
https://www.finaldraft.com/downloads/finaldraft1300Win.zip
And complete the installation as normal.
Once that is installed and you've opened FD13 and signed in, you can update to the latest version of FD13 by going to Help > Check for Updates in the menu bar.