Purchase amount not showing in P& L reports

Thanks for reaching out here in the Community, @Miriam162. I'd love to help you resolve your concern so you can proceed to run a profit and loss report that shows your cost of sales in QuickBooks Online (QBO).

The cost of sales is a total of all expenditures for a product with the inventory type that is measured and accumulated. You'll have to check each of the item's product types to ensure that the cost of sales appears on your report.

To change or edit the type of the product, these are the steps:

1. Click on the Gear icon and choose Products and Services.
2. Locate the item and click on the Edit link.
3. Click on the Change type link in the Product/Service information panel select Inventory.
4. Set the necessary information of the product.
5. Once you're done, click on Save and close.

You can also visit this article for further guidance about changing the product and services types: Change product and service item types in QuickBooks Online.

In addition to that, I've got you this article in case you'd like to merge or remove a product or service item in QuickBooks Online: Remove or merge a product or service.

It was nice having you here in the Community, @Miriam162. If there's anything else that you'd like us to assist you with, don't hesitate to post here again. Our dedicated team of experts would love to have you back anytime soon. Take care and have a good one!