If a message says your Apple ID is locked or disabled "for security reasons"", the document If your Apple ID is locked or disabled - Apple Support directs you to reset your password as outlined in this article --> If you forgot your Apple ID password - Apple Support
If you use two-factor authentication and can’t sign in or reset your password, you can regain access after an account recovery waiting period, as outlined in this document: How to use account recovery when you can’t reset your Apple ID password - Apple Support
If you still have questions or problems:
Refer to this document for ways to contact Apple --> Choose your country or region - Official Apple Support
Select your country (also look for "other" regions), then a product. If you don't see one that handles your issue then keep experimenting with selections until you reach one that gets you a chat session or a telephone call and get the representative to redirect you.
or:
Contact Apple for support and service by telephone --> Contact Apple for support and service - Apple Support