I would to post inventory quantities and costs from figures that I got from a stock count

Hey there, betty. 

It's great to have you here in the Community, and I want to extend my appreciation for choosing QuickBooks as your accounting partner. I am here to assist you with your concerns regarding inventory in QBO. 

QuickBooks Online offers a comprehensive set of features to manage inventory effectively. You can easily track your stock levels, receive alerts when it's time to restock, and gain valuable insights into your buying and selling activities. 

If you're referring to adding inventory items into QBO, ensure you have the Plus version of QuickBooks to enable the feature. To access the necessary settings, follow these steps:

1. Click on the Settings icon and select Account and Settings.
2. Choose the  Sales tab.
3. In the Products and services section, click on the Edit ✎.
4. Enable the option to  Show Product/Service column on sales forms.
5. Turn on both  Track quantity and price/rate and Track inventory quantity on hand.
6. Click  Save and then Done.

Once you have enabled the feature, you can add items that allow you to set and track product quantities. 

To add a new product or service in your settings, follow these steps:

1. Go to Settings and select Products & services.
2. Click on New.
3. Select Inventory from the options.
4. Provide a name and SKU for the item you want to track.
5. Choose a category from the dropdown menu. Categories help you group your products and services.
6. Enter other necessary details.
7. Click Save and close.

To find more detailed information, refer to the article titled: Set up and track your inventory in QuickBooks Online. This provides you with additional guidance and instructions. 

If you're referring to something else, please don't hesitate to post them in the comment below. I'll be here to assist you more.