Open Secure Folder, enter the wrong pin, and then hit Forgot Pin (it only appears after an incorrect entry). From there, I believe it'll prompt you to log into your Samsung account and will allow you to reset the code.
If you've forgotten your Secure Folder PIN, you can reset it using your Samsung account.
Attempt your PIN a few times until the “Forgot PIN” option appears. Tap on it and sign in with your Samsung account credentials. Once verified, you’ll be prompted to set a new PIN, password, or pattern.
Note: If you don’t see the reset option, please ensure the Secure Folder app is updated to the latest version via the Galaxy Store.
