Vertical Climb performance is not published and probably not even tested because it is unnecessary. I cannot think of any vertical manoeuvre that has to be completed within a certain time, both civil and military.
The only unofficial example I can think of was in Borneo with the Whirlwind HAR 10. With the Gnome engine installed the transmission limits meant that you were restricted on how much power you could put into it. This was indicated by a red line on the fuel flow gauge. Periodically we would ballast it to MAW and climb it vertically with the fuel flow at Max Permissible. It had to climb 200 ft. in one minute. If it failed then the red line marker would be adjusted until it did.
This was to make sure that you got out of a vertical entry clearing in the jungle up to 200ft. high.