I forgot my iPhone password

If you are having trouble with a particular App, you will need to contact the developer of the app.

If you forgot your Apple ID Password, then follow this:

If you forgot your Apple ID password - Apple Support

If you forgot your Passcode to get into your iPhone and know your password, follow this:

If you see an iPhone or iPad unavailable message or Security Lockout screen - Apple Support

If you forgot you Passcode and that did not work, follow this:

If you forgot your iPhone passcode - Apple Support

See this Apple article: If you forgot your Apple ID password

If you forgot your Apple ID password - Apple Support

Then see this Apple article: What to do after you change your Apple ID or password

What to do after you change your Apple ID or password - Apple Support

B T W:

You are sign in here .  .  .  with your Apple ID & Password.

Your Apple ID is the personal account you use with all Apple products and services. It includes the email address and password you use to sign in, as well as the contact, payment, and security details that you use with Apple.

You can’t merge multiple Apple ID accounts.

What happens when you use the same Apple ID & Password that you use to sign in here?

See the following Apple articles

Sign in with your Apple ID -> Sign in with your Apple ID - Apple Support

Manage and use your Apple ID -> Manage and use your Apple ID – Apple Support (UK)

Or have you forgot your PassCode?

See: