Q: I don't have the cellular data on my iPad, how do I get this application

Not at application.

Do you have an iPad wi-fi+cellular model or a wi-fi only model?

yes my ipad is wifi +  cellular but there is no cellular data option in the setting

What is the model of your iPad? Settings>General>About>Model

Do you have a SIM card in the device?

ME987NF/A

Yes

Ok, that is a WiFi + cellular iPad.

Try resetting network settings. Settings>General>Reset>Reset Network Settings.

i did, even i restored it but there is nothing

Did you set up an account with a cellular provider? Have you contacted them about this?

not really in the first place the cellular option is not listed in the setting. this happened after i upgraded to ios 9.2.1. i think the problem is from the ios

my ipad2 wifi cell never had that setting it's called mobile data

even mobile data also not in the list

If you have not obtained a cellular plan from your mobile provider, any further discussion is pointless.