How to Show Confirmation Message Based on Form Answers
When a user submits your form, they can be presented a custom Thank you
message confirming that their form submission has been received.
Show a Thank you message​
Open the sidebar inside Google Sheet and expand the Basic Settings
section. Here enter the text inside the Confirmation Message
field and this text will be shown to the user when they submit the form.
The confirmation message can be customized with HTML tags to format tags, include hyperlinks, images and you may even link to your social media pages on Twitter and Facebook.
Here's a sample confirmation message written in HTML:
<h4>Thank you</h4>
<p>We have received your application and will get back to you soon.</p>
<p>
Meanwhile you can follow us on
<a href="https://twitter.com/labnol">@twitter</a> for updates.
</p>
This is how the text will appear to the form respondent.