How To Enable Address Autocomplete
If you have a Growth (5 Sites) or Agency (Unlimited Sites) license, you can enable Address Autocomplete in Settings > Checkout for WooCommerce > General:
Then click Save Changes.
Address Autocomplete in Action
API Key Requirements
You can generate API keys in the Google Cloud Platform Console.
The Google Places API must be enabled for your project.
API Key should be restricted to your website as referrer to prevent other's from stealing it. It's also recommended to limit the API's each key has access to to only the ones required (such as Google Places API)
The organization must have a billing agreement.
The project must be linked to one of your organization's billing agreements.