What is the ruling on money that has been restituted from a scholarship obtained through deception in one of its requirements, and which is currently being spent from?

You must repent to Allah if the lie was the reason for obtaining the scholarship. It is not permissible to benefit from it unless the granting body approves after being informed of the truth. As for your guardian spending on you from the money he recovered, there is no objection to that. You are required to pay the tuition fees if it becomes clear that you are not entitled to the scholarship, and this will be the responsibility of your guardian, who must pay them to the educational institution from this money or other funds.