Do we have any ML library, that I can use to export the dashboard from Celonis studio instead of extracting it as an OLAP table?

(I assume dashboard = Analysis)

Do you mean downloading the data of a certain component in a dashboard? Like the data showed in a OLAP table? (short answer yes, using python call pql()

Or "export" the dashboard so you can "embed" it in another webpage? (AFAIK this is not possible)

Or export the dashboard definition so you can have some like a backup? (short answer Yes, just keep the .data structure of the analysis object)