To display different FAQs for each product, Please follow steps below provided with screenshot

Step 1 :

Go to Store Admin –> Content –> Metaobjects -> Click on “Add definition

Create a metaobject faqs and then add Question and Answer fields as below and save page.

Step 2:

Click on “Add Entry” button on same page at top Or

Go to Store Admin –> Content –> Metaobjects -> FAQs > Add Entry

Enter your Question and Answer details as bellow. You can add many entry as needed.

Step 3:

Now go to Metafields and metaobjects and create a metafield definition for metaobject Faqs created in steps 1.

Go to Store Admin –> Settings –> Metafields and metaobjects –> Click Products -> Click on “Add definition

Step 4:

Please navigate to your products and scroll down to the metaobject list labeled “FAQs”. Select faqs and click save

Step 5 :

Now go to product page from theme customize, Click in Product Tabs section and Add block “FAQ’s” and click save.