We need to confirm whether Shopify Google app allows use of metafields in the product title/description. Does anybody know how to do this?
Hello @wq_IntDev ,
Welcome to the Shopify Community, we’re happy to help you!
Please find below an article that should help with your query -
You can add metafields to your products, collections, customers, orders, and other parts of your store, either directly from your Shopify admin or by using an app from the Shopify App Store
Hope this helps, feel free to reach out to us incase of any help needed 
Love & Light,
Team Marmeto