You signed in here using your Apple ID, right? If yes, it has not been reset unless you took some action to do so, and I think you are being subjected to a scam.
Did you provide any potentially damaging information to anyone? If yes, you'll need to follow up, for example, with a credit card company, Apple, your bank, etc.
And, see Identify legitimate emails from the App Store or iTunes Store https://support.apple.com/en-us/HT201679
For scam related information from Apple including reporting scams to Apple, see Avoid phishing
emails, fake 'virus' alerts, phony support calls, and other scams https://support.apple.com/en-us/HT204759