Do you get FaceTime on a Apple iPad after a update

If FaceTime was installed and available prior to update, yes.

Be aware that not all features and Apps are available in all countries. FaceTime, by example, is not available in some middle-eastern regions due to legal restrictions. Updating the system software will not circumvent these restrictions.

I'm not sure what your question means? An update should not take FaceTime away, so if an update did for you, please provide more details about your issue. Do you by chance live in a country where FaceTime is restricted?