How forward a submission to an email address each time a form is completed by someone?

I would like to know if is there an option to automatically forward a submission to an email address or addresses each time a form is completed by someone?

Yes, you can set-up autoresponder email for this purpose. Please refer to this guide: Setting-up-Email-Notifications

You can also have a look at this guide for the detailed explanation of Email Notifications and Autoresponder emails: Explanation-of-Email-Notification-and-Autoresponder-Settings

Let us know if you need any further assistance.