How do I reset my iCloud password

If you have forgotten the password.

Enter the Apple (iCloud) ID and click Forgot Password.

Apple ID - Manage

Apple ID – Forgot Password

If you want to change the password.

 Apple ID Password Change

 What to do after you change your Apple ID or password - Apple Support     I suggest doing this before you change your Apple ID or password.

You iCloud address is an Apple ID. Use the same links.

I need to change my iCloud password