Hi @ronsei
Welcome to the forum
There are a bunch of ways of doing this - Camunda has an enterprise tool Optimize that in fact specializing in taking the data out of the engine and visualizing it, but you can also use the tool to export specific data to CSV.
Optimize does require the EE version or at least get a trial license so if you don’t want to do that, you can just use the REST API to get out the data you want and covert the response into something you can upload into a 3rd party system
Finally - you can just straight up query the Database directly and export the results, all the data you need is stored there - it just needs the right query.