About family partition

We are four brothers (hindu) some properties are in name of my father some are in name of my grandfather and others are in name of we 4 brother. After father's death all property were taken together and there was a family settlement ( not registered) irrespective of that the property is in whose name, signed by all brother and two witness. Some of our properties are in delhi. The property in my elder brother's name is big and located in main place. And the property which is in my name is small. So the amount of his property is much more than mine. According to family settlement ( signed by all) he have to give me the difference amount of his property and my property located in Delhi. The amount is also mentioned in the settlement. Our family settlement took place 5 year back after father's death and till now he has not given me the difference amount. There are also some property which is in my name but he got in family settlement and also built home on that. Now when I ask for my money along with interest, he is saying that he will neither give the difference amount nor interest on it. What can I do now.