About us page and
Contact Page you also need to go to admin dashboard, then
FAQs and select the template suffix
Here you will find a text box with the title of content, in this box you can provide your Faq page content.
Then go back to theme customization and go to Faq page, then you can see a tab called
Faq page . click on this and you will see two boxes, first one is for title or question, and the last one is answer or description. give your content and save this. now just follow the simple rule you con add more faq item like this.