how do I retrieve my password for the Touch ID??

If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled, you'll have to put it in Recovery Mode and Restore it as new while connected to your computer. 

https://support.apple.com/en-us/HT204306

If you forgot your Apple ID password - Apple Support

https://support.apple.com/en-us/HT201487

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 

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

It is very important that you think, starting now, about your security questions and their answers. If you don't answer them correctly enough, then you easily can lose control of your account.