How to Change the Apple ID Password
1. My Apple ID https://iforgot.apple.com/password/verify/appleid
and enter your Apple ID and Click Next
2 .After you enter your Apple ID, there are three ways you can change your password:
Answer your security questions.
Use email authentication. (Use the primary email ID used while creating the Apple ID)
Use two-step verification.
3. Follow the procedure to chance the password.