What is the ruling on receiving government financial support through a committee in which a usurious bank participates with a 5% interest rate, given that work is scarce and youth suffer from unemployment, and how should one who has benefited and not yet repaid act?

It is not permissible to enter into a concomitant transaction that involves usury (riba), which is the part offered by the bank as a loan with 5% interest. Whoever has received any part of it must distance themselves from it and return the support to its providers, for usury is ominous and removes blessing.

However, if the transaction is not concomitant, such that the amount can be taken from the party that does not charge interest, and the amount paid by the bank with interest is left, then there is no harm in that.