You can export Sprint User stories and Issues in .csv, .json, .xml and .xls.

Sprint > Right Navigation Panel – Settings > Export Data

Select the format from one of options:

Cards for User Stories: Print all the User Stories assigned to individual User in from of Cards or Content.

Cards for Tasks & Issues: Print all the Tasks and Issues associated to current Sprint in from of Cards or Content.

Cards of Sprint Issues: Print all the Issues associated with the current Sprint.