Connectivity to Google Analytics is built into Acabado. The theme is compatible with both the previous version of Google Analytics and Google Analytics 4.0.
In your WP dashboad click on Acabado Settings > SEO and enter your Google Analytics tracking ID in the box as shown below.
This is just that short tracking ID that looks like UA-XXXXXXXX-XX or G-XXXXXXXXX.
Then make sure to click “Update” far right to save your changes.