We are not intrested in money etc.hewas a drunk and we barely saw him,his sister didn't even tell us he wasdead. What rights do we have

Please clarify your question.
Exactly what rights are you referring to ?

we are not intrested in money etc.hewas a drunk and we barely saw him,his sister didnt even tell us he wasdead. wot rights do we have

I'm confused. If you don't want his money and were not involved with him, what do you want exactly? Why not let his sister handle it?