You can add Metrimo Analytics tracking code to your Shopify website by editing the code in your theme file.
Go to the edit code section of your Shopify theme by clicking on "Online Store" in the left-hand sidebar, then choose "Themes", click on the "Actions" button next to your current theme and choose the "Edit Code" option.
In the "Layout" section of the theme code editor select theme.liquid.
Paste your Metrimo Analytics script tag before the closing </head> tag of the theme.liquid file and save it.
Now you can go to your website and verify whether Metrimo Analytics script has been added to your Metrimo Analytics account to see whether the stats are being tracked.