The handle to turn the spigot on has been broken off & cannot be used. Tried to use pliers but that wouldn’t open it

it's a two-for-one with water! they have a filtered water station, paper gallon, at the small car wash building behind the main building on the main building they have a potable hose spigot at the corner which they were perfectly fine with letting me use, and seemed surprised that I would even ask. the knob on the spigot is not attached and can fall off easily, so if it ends up disappearing you might need a water key or a pair of pliers.