Hi there, @FatB0b-1960. I can share some steps on how you can add a hyperlink to your quotations and invoices.
You can add the Google reviews hyperlink through your invoice's Memo or Description field. You can give a heads-up to customers that the details are in those areas.
Sign in to your QuickBooks Online (QBO) account.
Go to the +New icon, then click on Invoices.
Fill in the details, then add the link under Description or Memo.