Hello there,
I want to ensure you get the help you need about your sales tax concern.
Just to clarify, the sales tax you're referring to be read as Tax (0.0%) pertains to the TAX in your transactions? Similar to the screenshot provided below?
If yes, right now QuickBooks Online (QBO) is designed to show TAX only on your sales or expense transactions. To know the rate of the sales tax applied to your transaction, you can consider adding that information to the DESCRIPTION column on each line item or to the Message on invoice section.
However, if you mean something else, please let me know and give additional details. This way, we can provide an appropriate solution to your concern.
In case you'll pay your sales tax in the future, here's a video that you can check for guidance: How to pay sales tax in QuickBooks Online.
If there's anything else you need help with about sales tax, feel free to reach back out. I'm here to lend a hand.