How to reset your Apple or iCloud password with your email address or security questions
If you know your Apple ID (the email address you used when you created your account), you can reset the password by receiving an email or by answering the security questions you used when you first created your Apple ID.
Navigate to iforgot.apple.com from any web browser. Enter your Apple ID, which is the email address associated with your Apple or iCloud account. If you've forgotten the address you used to create your Apple ID, follow the steps to recover your Apple ID. Type in the CAPTCHA characters to prove you aren't a robot.
Click or tap Continue.
Enter your Apple ID and CAPTCHA, then click Continue
Select I need to reset my password.
Click or tap Continue.
Click I need to reset my password, then click continue
Select Get an email to have the instructions sent to your email address.
If you don't want to wait for the email, you could, instead, select Answer security questions and answer the security questions you filled out when you first entered your Apple ID (NOTE: You'll have to remember the answer to those security questions).
Click or tap Continue.
You will receive an email at the address associated with your Apple ID.
Click Get Email, then click continue
Open the email you received from Apple titled "How to reset your Apple ID password."
Click or tap Reset now in the email. You will be redirected to the reset section of iforgot.apple.com. Back on the website, enter a new password. Enter the new password again to confirm.
Click or tap on Reset Password.
Click Rested Now, then enter a new password, then click Reset password
Make sure you save your new password in a safe place. It is a smart idea to get a password manager if you don't already have one.