Right to succession if parents are divorced

In the month of june my father expired, my parents were separated for almost entirety of their married life, my mother filed a case for maintenance, which eventually ended in settlement, the settlement deed expressly stated that I nor my mom can claim anything from my father’s assets. This copy was mere MOU. After his death will such agreement/contract still hold itself infront of the hindu succession act that applies on me? Or is it that I have the right to claim the assets, as it maybe noted that divorce decree (obviously) doesn’t have my signature, I’m neither the contractor nor the contractee, decree mentions that parties must abide by the settlement deed.