Sharkbite push to connect plumbing fittings can be reused several times and possibly 10 or 15 times before it fails to seal the pipes together.
Most people will install a Sharkbite fitting once and never remove it until they have another plumbing problem so they may only reuse the plumbing sharkbite fitting 2 times in the lifetime of the sharkbite fitting.
You'll likely never need to reuse the Sharkbite push to connect plumbing fitting more than once or twice so it shouldn't be a problem.
Sharkbite says that you can safely reuse the Sharkbite plumbing fitting up to 6 times although it's not recommended and most people won't reuse the sharkbite fitting that often anyway.