Is it permissible to carry a television set for a friend, knowing its content, and would that be considered aiding in corruption?

A television set can be used for good or for evil. If misuse predominates for a person, then do not assist him in sin, as Allah the Almighty says: (And cooperate in righteousness and piety, but do not cooperate in sin and aggression). And if good predominates for him, then there is no harm in carrying it to him. If you are in doubt about his situation, it is better not to carry it, according to the Prophet, peace and blessings be upon him: "Leave that which makes you doubt for that which does not make you doubt."