Hi Yotam,

Thanks for contacting us here.

For your information, our plugin manages stock of the bundle based on the available stock of bundled products. When one of the bundled products goes out of stock, the whole bundle will be out of stock.

If you enable the Exclude unpurchasable option in the plugin settings, it might make bundles always in stock by removing any out of stock items from the list.

It's impossible to set up a stock quantity that is higher than the lowest stock of bundled products inside a bundle if your bundled products have stock management configured. 

If all of your bundled products only use the stock status (In stock/Out of stock) with no quantity configured, you can freely set up any stock for the bundle by enabling the "Use stock management at bundle level" option >> Update then go to the Inventory tab to enter a stock quantity.

You can read more about stock here: https://doc.wpclever.net/woosb/stock-inventory/

Best regards.