Good evening Harlee and welcome to the Events Calendar Support forum!
Thank you for reaching out to us.
I would love to help you with this topic.
By the looks of it I believe you have not yet downloaded and installed the Events Calendar Pro add-on.
The Events Calendar Pro is a separate plugin that extends the Events Calendar (it does not replace it).
You can read more about this here: http://theeventscalendar.com/knowledgebase/new-user-primer-the-events-calendar-and-events-calendar-pro/
Once that is done, you should be able to enter your license key properly.
Let me know how that goes.
Best regards,
Geoff B.