Where can I get the PiHole API?

I got a new project and
The issue I am facing:
I'm trying to find the API in Web Interface - API Settings
only App password is available before we can generate an API and QR code too etc.
Where is the new API?
Details about my system:
Raspberry Pi 4 Model B Rev 1.405:18:32 ~ →
What I have changed since installing Pi-hole:
N/A

Never mind it's the App Password the new API etc. thank you all... Pi-hole API - Pi-hole documentation