Welcome to the QuickBooks community! I can absolutely show you how to get the shipping address to also appear on your invoices alongside the billing address. It's just a few easy steps once the shipping address is entered on your customer profile.
Once set up, the next step is making sure that your custom forms are set up to show the shipping address. Here's how.
You can learn more about editing your sales forms here: Customize your invoices, estimates, and sales receipts in QuickBooks Online
Now when you go back to your forms to send to your customers, you should also see the shipping field.
Give me a shout if you need anything else!