Can I add my Favicon to the form web page?

Yes- you can.
Favicon is an icon that appears in the browser tab. Many businesses, as a part of their branding process when creating a company webpage, tend to also change the default Favicon to their own logo.

Changing the Favicon is easy. All you need to do is:
1- Go to Properties panel > Form tab > Settings option > Head category
2- Paste your Favicon code in there:
For example:
<link rel="apple-touch-icon" sizes="180x180" href="https://realfavicongenerator.net/the_favicon/apple-touch-icon.png?v=XBr4XjEpXx"> <link rel="icon" type="image/png" sizes="32x32" href="https://realfavicongenerator.net/the_favicon/favicon-32x32.png?v=XBr4XjEpXx"> <link rel="icon" type="image/png" sizes="16x16" href="https://realfavicongenerator.net/the_favicon/favicon-16x16.png?v=XBr4XjEpXx"> <link rel="manifest" href="https://realfavicongenerator.net/the_favicon/site.webmanifest?v=XBr4XjEpXx"> <link rel="mask-icon" href="https://realfavicongenerator.net/the_favicon/safari-pinned-tab.svg?v=XBr4XjEpXx" color="#5bbad5"> <link rel="shortcut icon" href="https://realfavicongenerator.net/the_favicon/favicon.ico?v=XBr4XjEpXx"> <script> (function() { var link = document.querySelector("link[rel*='icon']") || document.createElement('link'); link.type = 'image/x-icon'; link.rel = 'shortcut icon'; link.href = ' URL HERE '; document.getElementsByTagName('head')[0].appendChild(link); })(); </script>

3- Save the form.
4- Test the form:
Publish your form as URL and you will see the Favicon there.