Forgive me for being naive but why do daughters get nothing? “
The Torah presupposes that the eldest son will financially look out for his family. In this day and age, that might not be such a certainty. Bnos Tzelafchad came before Moshe Rabbeinu with that issue, and it was a stumper all right. The decision was made that they should marry men within their tribe only, and the Yerusha would go to each husband, so the property remained in the tribe.
I do not know a thing about how yerusha is supposed to work, but I would tend to think that nowadays it would be equitably distributed. A rov should be always be consulted on what is proper, if there is any question.