Thanks for your input and visiting the Community, @astanleyCTG.
It's good to see that the Avalara Avatax software is installed successfully. Meanwhile, the forum you have joined is right about this information. In fact, the script error appears when there's an issue executing a command that involves your computer attempting to access a web-based feature. The third-party applications like Avalara Avatax interacting with our QuickBooks Desktop (QBDT) software.
This means there is an issue with Internet Explorer running in Windows 11 Pro while integrating Avalara Avatax to QBDT. To fix this, you'll want to run Internet Explorer Mode in Microsoft Edge. I suggest checking with your IT specialist for more guidance since the sunset have passed last June 15, 2022 between IE and Microsoft Edge.
On the other hand, you can follow the steps from this article to resolve Error 1720 with Windows installer package. I'd also encourage checking the system requirements for QuickBooks Desktop 2022. This way, we can make sure the program is compatible with your operating system's current version.
In addition, you can reference this article for more details to resolve script errors: Script error when using payments account applications or websites. It includes disabling script debugging that can be performed with your IT personnel.
Feel free to share some updates here after consulting your IT. If you have other concerns, ensure to comment so I can assist you more. I'm always here in the Community, ready to help. Take care!