There's not a native way to do that exactly, unfortunately. Trello does allow free and Gold members to export to JSON, which is a file format more dedicated to data analysis than anything else.
Business Class subscribers can export boards to CSV: https://help.trello.com/article/747-exporting-data-from-trello-1
You might also look into a number of third-party Chrome extensions that can help do this as well, exporting in a number of formats: https://chrome.google.com/webstore/detail/trelloexport/kmmnaeamjfdnbhljpedgfchjbkbomahp?hl=en
If you had to thrive a new habit during a lockdown, what would it be? Trello
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