Find my API Key

How do I find the API Key for my wix website?
I tried following the support article ( https://help.wixanswers.com/en/article/obtaining-an-api-key-to-your-wix-answers-account ) but couldn’t find Webhooks and API section in settings

Are you actually using Wix Answers?!
https://help.wixanswers.com/en/

As for exposing your site then see Wix Fetch and Wix HTTP Functions.

https://www.wix.com/corvid/reference/wix-fetch.html#fetch
https://support.wix.com/en/article/corvid-accessing-third-party-services-with-the-fetch-api

https://www.wix.com/corvid/reference/wix-http-functions.html
https://support.wix.com/en/article/corvid-exposing-a-site-api-with-http-functions

For hoos see here.
https://www.wix.com/corvid/reference/wix-data.Hooks.html
https://support.wix.com/en/article/corvid-about-data-hooks
https://support.wix.com/en/article/corvid-using-data-hooks