Hey @tzuhouse,
You will want to create an automation that will get triggered when a form is submitted.

You will then have a send an email (or gmail or outlook) action block, where you’ll map the email address of the person who submitted the form.
Completely different matter, but would love to have you join our Airtable Hackathon! Make sure to sign up!!
Mike, Consultant @ Automatic Nation
YouTube Channel
If the following are true the people filling out the form have Airtable accounts, you could try using a Form View, then you could toggle on ‘Allow people to request a copy’:

And this is available on both free and paid plans
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If they don’t have Airtable accounts, then I'm afraid you’re stuck using an automation like Mike said. The Free plan has 100 automation runs, so you’d be able to send out up to 100 email receipts