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You can set email notifications on the form from Email Alerts option in Setup & Embed options on the main menu.
I request you to go through the guide Setting-Up-Email-Notifications that has step-by-step instructions with a demo video that helps you in easy understanding to setup up email notifications when someone fills your form.
Also, the guide on How-to-setup-email-alerts-to-prevent-email-bouncing-related-issues would help in preventing any email related issues.
If you need any further assistance, please reply to this post. We are happy to assist you.