Bohr's correspondence principle states that in the limit of large quantum numbers or large systems, the predictions of quantum mechanics should match those of classical mechanics. It relates to the behavior of quantum systems as they approach classical behavior.
The correspondence principle does not directly imply that everyday classical objects, such as an apple falling from a tree, can be calculated using quantum mechanics. Rather, it suggests that the predictions of quantum mechanics, when applied to large systems or systems with large quantum numbers, should converge to the predictions of classical mechanics.
In the case of an apple falling from a tree, the behavior can be accurately described using classical mechanics, which considers the apple as a macroscopic object subject to gravitational forces. Quantum mechanics becomes relevant when dealing with objects at the atomic or subatomic scale, where quantum effects dominate and classical mechanics breaks down.
So, while the correspondence principle indicates that quantum mechanics should reduce to classical mechanics in certain limits, it does not imply that quantum mechanics is directly applicable or necessary for describing everyday classical objects or phenomena like an apple falling from a tree.