clicking noise and loud sound when car is on stop and parking worst when it’s up hill
Explain what you mean by “when car is on stop”. And by “worst when it’s up hill” do you mean the sound is loudest when you are driving up a hill, or when stopped or parked facing uphill?
Very loud clicking sounds with the engine running only when facing uphill make me think of a problem with the radiator fan. Or something has come loose in the engine compartment and is moving and interfering with a pulley or belts when the angle is right. One time the plastic bottle that hold the windshield washer fluid came loose on my car and made a huge racket when it touched the alternator pulley.