Login to your google account and go to Google Forms. Go to your form created on Google forms and open it.
Go to File---> Embed.
Click on Embed. Copy the embed code shown and you are done.
Login to Learnyst as Admin and go to Website builder. In website builder you can add your custom code by adding a custom code section to your landing page from the side bar. Follow the below steps to do the same.
In side bar go to sections and add a custom code section.
In custom code section click on Edit.
Replace the existing custom code with your google forms embed code and click on Save. Click on Save in side bar to save these settings and publish.