For customers who would like to check the status of their service installation/activation, we have created this community article, which contains a video on How to track your TPG service installation
We also send an email notification once the service is activated. If you have received this email and the service is still not working, we recommend to check if the equipment is properly set up by going to this link : NBN Fibre to the Curb (FTTC) Setup Guide
In your case, your NBN is still waiting to be activated and you'll be notified via SMS or Email once you need to connect the NBN equipment. As of the moment, you may use your ADSL2+ service while waiting for the NBN to be connected.