What right do i have?

My dad's 96. I'm 24. He never mentioned anything about what plans he has for his retirement pay. He has his own ccmpany which is now being run by my half-brothers who are 20 & more older than i am. They have a very influencial family. That's why i am somewhat scared of them, not for myself but what they can do to those who are dear to me. They have been very unfair to me and my dad said that i should learn how to fight for my right. How, if i don't know what rights i have. Also concern about his pension plan. He said that i am his beneficiary. I want my father to live longer but it's better to be wise about the situation. We are Filipino citizens.