iPad mini2 recent OS upgrade and keyboard covers screen so l cannot see what l am typing

If the on-screen keyboard is not docked to the bottom of the screen - whilst the keyboard is visible, touch-and-hold the “keyboard” key at bottom right of the keyboard; an options menu will appear. Without lifting your finger, slide you finger to the Dock option - and then lift your finger.

I this resolves your difficulties.

You need the keyboard to be able to type though