All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
It is not permissible for you to shave your beard in all cases; rather, you are obliged to let it grow freely as it is an order from the Prophet . The fact that your beard is only some hair and you need to make it grow better is not a sound reason for shaving it.
For more benefit, please refer to Fataawa 90928 and 84474.
As regards your second question, you are not permitted to take this additional money because you are authorized to act in regard to this money, and the scholars stated that the additional money that the authorized person gets is a right for the person who authorized him, so it is not permissible to take it except with his permission.
Allaah Knows best.