Hello @Southernamni,
I can understand your concern. Expecting there to be a number under your usage and it not showing can be alarming. I would be happy to help.
Currently, there is not a way to block usage history from showing up on your online bill. If you are using iMessage, this goes over data and not AT&T messaging service. The details of these texts will not show up in the usage history. Likewise, if you are using an app for texting the details will not show up on the bill.
I hope you find this information helpful and please have an amazing week!
Jessica, AT&T Community Specialist