You can export all the underlying aggregated data of any visual in Qliksense.
All you have to do is right Qlik the visual. This will bring up a few options:
1) Export to excel - Exports the data in excel format
2) Export to PDF - Exports the state of the current visual(not the data) to pdf
3) Snap shot - Takes a snap shot and this can be used in stay building and other features.