My phone is from Dubai and I don’t have FaceTime how I can turn it on?

I have a few possible reasons:

1. I understand that FaceTime is restricted where your iPhone comes from. There is a possibility that might be the problem.
2. Do you have Screen Time restrictions on? FaceTime may be restricted in there.
3. FaceTime just isn’t on there.

In any case, try visiting the App Store and going to FaceTime’s page. If it does not say OPEN on it, it is not installed on your iPhone. In that case, try installing it. If it does not work, then I don’t know what to tell you🤷‍♂️.