Answered
Add swatches to main palette
How do I populate this tool in the upper left corner of the screen? It just has the no fill and registration icons. Thanks.

How do I populate this tool in the upper left corner of the screen? It just has the no fill and registration icons. Thanks.

You need to have a document open that contains swatches.
If you open an image, you will see none.
You can load swatches from the swatches panel.
https://helpx.adobe.com/illustrator/using/using-creating-swatches.html
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