Is there any certification that apple provide to developer ? If yes what is the process
Apple swift certification
No there is not, AFAIK.
Developer ID certificate is one thing you need to distribute your macOS apps.
Signing Your Apps for Gatekeeper
If your swift certification means some sort of classification program of developer's skills of Swift programming, I have never heard of such things.
Signing Your Apps for Gatekeeper
If your swift certification means some sort of classification program of developer's skills of Swift programming, I have never heard of such things.