@fraziermtnanc, do you have more than one Roku device? If so, it's possible that you have more than one Roku account. Make sure that when you try to log into https://my.roku.com you're using the email address that's displayed under Settings->System->About on your Roku device. You should be able to manage your PIN settings or remove it altogether.
How to create, change, or delete your PIN for your Roku account | Official Roku Support
I'm also a little confused by needing a PIN to "sign up with Peacock". On a Roku device, you can set up a PIN to be required to add channels and/or to make purchases. Where exactly are you being asked for a PIN? A picture might be helpful.
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