I am 16 in NY

Do I have a criminal record If I was arrested and charged but the case was dismissed and sealed?

Will it appear on a background check?
Can/will it negatively impact my employment chances with the financial industry?

Can financial institutions penetrate sealed records?

Are there any further actions I can take to make sure it does not appear on a background check?

Like expungement or something, but someone told me you can't expunge a record(criminal) that does not exist

Does that mean I do not have a criminal record?
What about the arrest record concerning this case?
Can it be sealed or expunged?