>>14003487It does exist. Stretch a spring and hold it - you’ve changed the potential energy, which is now stored inside the spring.
Similar to carrying an object up a hill.
You need to think of potential energy as a change between two states.
E.g bottom of hill to top hill - increase in potential energy.
You’re right, potential energy by itself doesn’t really mean anything. Only a difference between two potential energies means something - it’s the ability to release energy between those states.