Frozen bleeder screw remover tool???

I cant see how. I have a small drill bit secured in a loose drill chuck,ream bleeder hole and spray some penetrating oil in.
Most often it will break loose.
Wheel cylinders are cheap, so no big deal if it needs to be replaced.
Calipers, same thing. There are drill and tap bleeder screw kits, used them a couple times.

I guess a shot of lube before the percussion tool would loosen bleeder.