Hi, during the calculation all results are stored by OpenQuake into a hdf5 file and the outputs are usually exported after the calculation.
You can export via command line or webui. I would say webui is more intuitive (can you run webui?)
For the other option - command line, see the manual page 72:
oq engine --lhc
oq engine --lo <calc_id>
oq engine --export-outputs <result_id> <output_folder>
(first line will display calculation names and their ids, find your calculation number calc_id,
second line lists outputs available and their result_ids
third line exports particular output).
Peter