why there is no rate show in inventory book for credit note for good return?

Let's double-check the setup of your products and services to ensure you have included the pricing for both sales and purchase costs, Karen.

The reason why the price rate and inventory cost are not displayed when generating an inventory report is that you'll need to add the sales and purchase costs of your products and services when setting it up.

After adding the price rate and purchase costs, the rates will appear when generating the inventory report. See the screenshot below for your visual reference.

If you have any further questions or concerns, please let us know, and we will be happy to assist you.