Go to Online Store->Theme
Click on pages
Then search your FAQ page
1. Go to Online Store->Theme->Edit code
2. Templates-> Search there as like page.
Nick here from Shopify.
Once you create an FAQ page, you would need to provide the content for it yourself. The reason for this is that you would know the FAQ questions for your business better than anybody else and the questions for your business would be different than anyone else's.
You can edit the page and add the content and FAQs you feel will benefit your customers most here. Shopify Partner's Maestrooo wrote a great guide for how to get an FAQ page all set up from the link here.
All the best, Nick
You have to check in theme page template as suggest by oscprofessional.
find page.faq or something like similar Or may be you have any app installed for FAQ page content.
send your store url if cant find
From the screenshot it looks like you have an FAQ page set up already. If this is the case, you would be able to view it in the admin by taking the following steps:
Online Store > Pages > FAQ page or something else you could have named it (Screenshot seen below)
If you could also share your store link like @Jasoliya mentioned and we can take a closer look into this for you.