Display and design the Product Stock element info to show onto the page. You should enter the stock unit in the WP backend, from Products > Inventory. There you put the stock quantity and WooCommerce will automatically manage the stock status as either In Stock, Out of Stock, or On Backorder ( if you select to Allow Backorder).
Style Tab
Style
- Text Color - Set the color for the product stock text
- Typography - Tweak the typography options for the product stock text
Set the settings for the Advanced Tab that is appropriate for the element.