To view a list of items in stock and the inventory level, go to Reports > Inventory KPI

and view Variants.

If you'd like to see all items in your store that have at least one item in stock, use the 'Stock' Filter.

 Then enter '1' in the 'Min' field. Leave the 'Max' field blank.

Click the Apply Filter button.

To export this list, click on the Export button at the bottom of the screen. This will provide you with a CSV file of the stock information.