Hi @Ravikiran, and welcome to the Auth0 Community!
Your desired flow can be achieved by setting the Authentication Profile to Identifier First + Biometrics. With this setting, the user will be directly prompted to use their biometrics if they have already enrolled with this MFA option, and if not, they will be prompted to enroll.
I hope my answer helps you solve your use case!
Sincerely,
Teodor.