If you're referring to changing the dates on the previous payroll tax payment, you can simply delete and recreate it.
To delete a tax payment in QuickBooks Online (QBO):
Once completed, you can now recreate the payment.
For further details, you can read these articles:
On the other hand, if you're processing payments electronically, you won't be able to change it manually. With this, I highly recommend getting in touch with our Support Team for further assistance.
For the support's contact information, you can check it here: Contact the QuickBooks Online Customer Support team.
For more insights about paying and filing payroll taxes electronically, you can read this article: Pay and file payroll taxes electronically.
Feel free to get back to us here on the Community page if you have any other QuickBooks concerns in the future. I'd be glad to help!