What is the ruling on working in a charity organization that deposits donation money in treasury bills and bank deposits to benefit from interest amounting to 200,0, which banks exploit for loans, knowing that I am responsible for settling and recording these entries, and is this considered usury (riba)?

The benefits of loans in commercial banks and treasury bills are usurious and forbidden. Therefore, it is not permissible for the institution to purchase treasury bills or deposit donors' funds in usurious banks for investment, even if it is for charitable purposes, as usury is forbidden by Islamic law. Your work in this institution is impermissible due to your direct involvement in usurious transactions, unless you are compelled to do so, in which case it is permissible until you find permissible work.