What's oil pressure low in monitor mean?

Do NOT drive the car until fixed! Find oil leak and repair, add oil to proper level. Keep driving like that and you will need a new engine, and not later but soon, as in now

You engine can be badly damaged by this if you where driving at speed even after a minute or so it’s possible your oil level dropped because of the leak if you stopped quickly you may be able to sort the leak and put fresh oil in it if not a new motor will be in order once you put fresh oil in it it will become apparent very fast if it’s ok if not good luck