I am unable to find iTunes Store in my app stire to upload. How do i restore this spp back on my iphone6

The AppStore can not be deleted from your device, but it can be restricted. If you have restrictions for the iTunes Store set up in Settings/General/Restrictions, the app can not be located on the device. Only if you disable the restrictions, the app will be shown again on one of your screens.

This article has a list of all default apps that can be deleted and reinstalled in iOS 10:

Remove built-in Apple apps from the Home screen on your iOS device with iOS 10 - Apple Support

If you can't find the iTunes Store to download, setting the phone back to factory settings will put it back again:

Restore your iPhone, iPad or iPod touch to factory settings

You're welcome 🙂