Salam1-What would be the Islamic punishment in this world If I am proved to be a person who masturbates?2-What will be the punishment from Allah after death, for a person who masturbates?thanks.

Walaikumussalam
Imam in the ghaibat, pray for his zuhoor .Right now you stop this Haram act and do isteghfar inshallah Allah will forgive you.
Wassalam