Can I check if my PAYE gateway is activated in my new quickbooks?

Hello and welcome to the Community, @Ali B1.

Let me share some insights about your PAYE. As long as the reference you've entered on the payroll settings screen is the same as the one given by the HRMC, your PAYE should be activated already.

Please check this sample screenshot for reference.

Let me know if you have other questions or concerns. I'm here to help.