When you mention embed, we can assume that you are talking about using html code on your page.
Therefore your issue is not to do with Wix Corvid as it is not related to an issue with any Wix code that you have on your page.
Also, as it is third party code, then you would be better suited going through Google’s own support and asking them how to do this through Wix.
https://support.wix.com/en/article/using-iframes-to-display-visible-content-on-your-site
Otherwise you can try contacting Wix Support and seeing if they will help you.
https://support.wix.com/en/about-wix/contacting-wix-support
You can pass data from a html component to your page or vice versa as shown here.
https://support.wix.com/en/article/corvid-working-with-the-html-element
https://www.wix.com/corvid/reference/$w.HtmlComponent.html