Depending on what format you want export to, tabcmd might be able to help. If you look at the tabcmd Commands , you'll find the command export with several examples, including:
tabcmd export "Q1Sales/Sales_Report" --csv -f "Weekly-Report.csv"
You can save a instruction similar to the above along login/logout in a batch (.bat) file and then schedule this to run on a regular basis, for example using Windows Scheduler.
This is a very complete article about tabcmd that includes a reference to windows scheduler: https://mindmajix.com/tableau/learning-to-leverage-tabcmd-in-tableau. There are also many similar questions in the community already that may help, for example: How do I export underlying data using tabcmd?
Hope this helps!
Thank you for providing some insight into by request.