How can I gat my money back if I was scammed

Most likely not, that's how scams work. Since you provided no information related to this, there is little we can offer you to help.

The only thing is did you get an app from the Apple App Store? ... and this is what has scammed you?

Finally, it pays to be vigilant. See if the following support article can help:

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

Scammed in what way?