I don't see "n8n API" in settings ... I need to create an api_key

I’m trying to create an api_key.
I searched and found the steps to do that, but
I couldn’t see “n8n API” in Serttings.

I’m a total newbie. Sorry if this has been answered before.

URL route is /settings/api
I also want to ask, why did you create the api_key for n8n?