Click on the "+" icon to add a new content block

Click "+" to add a new web part in your content block

You'll be redirected to Microsoft forms. Click "Add new" to start

Click on the type of form element - Choice, Text, Rating or Date

Edit the form element. For example, add a question. 

Click "Add new" to add additional elements to the form

Click "Preview" to see how your form looks

Navigate back to your SharePoint tab. Link to your form will be added to the form creator window. Click "OK"

Click "Republish" to save the changes to your site

The new form appears on your SharePoint site

How to create a form on a SharePoint site