Hacked?

We don’t know what you did, what you might have clicked on, or what sort of (presumably) web app or web game or whatever was involved here.

You deleted it, so it’s gone, which also means there’s nothing remaining for us to look at.

Usual reading recommendation, as we ourselves are much easier to hack than are our devices, these days:

Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support

What happens when you tap on it? And did you ever install an app from a website rather than the app store?

BTW, it can’t happen unless it was on your phone when you got the phone. Did you buy the phone new or used?

Here’s something to check: Go to Settings/General and scroll to the bottom. Do you see “Profiles” just below VPN? If you tap on it what do you see?

You probably added it to the Home screen as a weblink.

If it said “loading” it was probably a web link.