The inventory does not appear in the statement of profits and losses

Dear I am training on this program through the phantom version located here in the manager (restaurant)
My problem is when I buy the goods as a stock it does not appear in the list of profits and losses I think it should appear as the cost of the goods but does not show that it only appears within the item of inventory in the budget

Inventory is an asset until you sell it. Then its cost shifts to an expense.

thank you dear :عيون القلب: