Resetting Apple ID password

Did you mean passcode. If yes, see Use a passcode with your iPhone, iPad, or iPod touch

https://support.apple.com/en-us/HT204060#adjust

If you meant password use Change your Apple ID password https://support.apple.com/en-us/HT201355 as indicated above.

Here is What to do after you change your Apple ID or password https://support.apple.com/en-us/HT204071

Follow the steps in this article:

Change your Apple ID password - Apple Support

Good luck!

If you forgot the password, enter the Apple (iCloud) ID and click Forgot Password.

Apple ID - Manage            

Apple ID – Forgot Password            

If you mean the password, did you try the two links I posted?