OK. Did you find these SDK?
from there you will need to still sign-up via their free tier via dreaded portal for API key:
https://console.bce.baidu.com/ai/?fromai=1#/ai/face/overview...
Apparently "立即注册" means "Sign up now"! So you will have to go through that and lovingly translate each field. If you right-click in Chrome and click Inspect on a textbox you will see they have English names for their control namess (like name="userName") ... lol.