How do I download face time on iPhone 5 if mine didn't come with face time? Thanks

Go into your settings, you should see Facetime. Then turn it on.

There is no app to download. You access facetime thru your contacts.

If you bought your phone in the Middle East UAE .. you will not have facetime as it has been restricted by the government.

Sorry, no. If FaceTime is not on your phone, there is no way to get it.