Hi,
Thanks for using our plugins.
We only have a way to export a single event to Google Calendars.
The export process for Google Calendars relies on all the information being in the url so it only supports the one event.
You could try using the export ical file on the list or month view and importing more events that way.
For addition help on the core version of the Events Calendar please ask in our wordpress.org forum – our staff scan it periodically and other community members may also be able to help out.
The Events Calendar
Cheers