Computer Configuration > Administrative Templates > Microsoft Edge - Default Settings (users can override)
Both
HKLM\Software\Policies\Microsoft\Edge\Recommended
Enables Microsoft Edge's AutoFill feature and lets users auto complete payment instruments like credit or debit cards in web forms using previously stored information. This includes suggesting new payment instruments like Buy Now Pay Later (BNPL) in web forms and Express Checkout. If you enable this policy or don't configure it, users can control AutoFill for payment instruments. If you disable this policy, AutoFill never suggests, fills, or recommends new payment Instruments. Additionally, it won't save any payment instrument information that users submit while browsing the web.