How can i show paid subscription expire day time left on header?

[cellarius]

You can't just move variables around like that. That information is not available in header template, or on any page in vB, for that matter.

Not an easy way by simple template edit. You need to add php code to a plugin to find out if the current user has any active subscriptions, if so, which ones, get the expiry dates, and register that information for the header template. If you have more than one subscriptions, you need to decide which one to show, or show them all.