Apple Passkey as MFA security key is not supported

AWS multi-factor authentication (MFA) is an AWS Identity and Access Management (IAM) best practice that requires a second authentication factor in addition to user name and password sign-in credentials. You can enable MFA at the AWS account level and for root and IAM users you have created in your account.

You can manage your MFA devices in the IAM console. The following options are the MFA methods that IAM supports.

• FIDO security keys
• Virtual authenticator apps
• Hardware TOTP tokens

To know more about the IAM MFA features, Kindly refer [+]

[+] https://aws.amazon.com/iam/features/mfa/