Well wplms has course based in depth statistics of a course that you can download from course admin -> stats section .
For user base statistics you can download it from wp-admin -> lms -> statistics -> download stats -> select students .
this will give you course taken by the user and marks in them .
Exporting buddypress profile field data and user's activities is not available as of now in wplms .You can consider using third party plugin for this .