password

You wont't be able to reset it unless you know the current one.

So, see If you forgot your Apple ID password https://support.apple.com/en-us/HT201487

You also can use Having trouble signing in/iForgot https://iforgot.apple.com/password/verify/appleid to try to recover it.

And you may need to see If you forgot the answers to your Apple ID security questions https://support.apple.com/en-us/HT201485

Before trying to answer your security questions is very important that you think about your questions, including your birth date, and their answers carefully and try to recall all details you can. If you don't answer them correctly enough, then you easily can lose control of your account.

Note that If you're using two-factor authentication and can’t recover your password, you usually will need to enter account recovery. See Recover your Apple ID when you can’t reset your password  https://support.apple.com/en-us/HT20492

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If you recover your password, then

use Change your Apple ID password https://support.apple.com/en-us/HT201355, and

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

Hello, welcome to the Apple Users Community.

There are many different uses for passwords on Apple devices.

Please see these links for more help with some of them.

1. Apple ID: https://support.apple.com/en-us/HT201487
2. Phone Passcode: https://support.apple.com/en-us/HT204306
3. Mac User Account: https://support.apple.com/en-us/HT202860

I hope this helps with your issue.

Best of luck