Help me I can't find install button in any of the apps in app stores m

Ronit,

When you click on App that you want to download there should be a button on the right that says Get. Do you not see this button?

You have to tap an app the tap GET.

Restart your iPad. Hold power and Home key together until you see the Apple logo (about 10 seconds). Then try app store again.

If the problem persists after restart, log out of the iTunes and App Store. Settings > iTunes and App Store and click your Apple ID then the sign out option. Wait a minute and log back in.

Then do what UGADog suggested above....