Enable email notifications
At the top menu bar of the form builder click
Automate. The Automate pane will show up on the right side of the form builder.
The first feature of this screen is
Email notification. After enabling the feature
Send an email when someone completes your form you can enter the email address of the recipient. This will result in a simple email message to the entered recipient when someone completes the form.
Include response data
It's also possible to include all response data of the completed form directly inside the email message. In that way, you don't have to open up the studio to see the given answers. To do so, just enable the checkbox
Include response data in the message and all given answers will be shown in the email message automatically.