Black Box Pop up scam message on iPhone 6S screen while using Instagram app

A scam message popped up stating that it was looking for delivery drivers. But this was a whole new way a message was sent to me. Usually I get scam texts in the Messages app but this one just popped up on my iPhone 6S screen while I was using the Instagram app. It was a black box and at the bottom it said dismiss, and additionally there was like a "more info" thing by Apple that send some people use this way to send messages so they know the receiver has read it for sure. I clicked the only option available on the pop-up which was "Dismiss". I'm just a bit afraid as I usually get Amber Alert pop ups on my iPhone and have never received a scam message pop up like this. I was NOT using Safari at all.

Has this happened to anyone else too? :(

Is my phone affected by this?