What does the formula P = ρ GH mean? emergency

What does the formula P = ρ GH mean? emergency

P pressure (the pressure on an object in water)
ρ density (the amount of substance per unit volume)
G gravity (g = 9.8n/kg)
H the height from a point below the liquid level to the free surface
This formula refers to the pressure of an object at a certain depth of a liquid! A formula for measuring the pressure of a liquid in a physical formula