for all (one) is worth
1. To the greatest degree or extent of one's ability; to the utmost; as vigorously or intensely as possible. When I saw the police approaching, I ran for all I was worth.
2. As much as one has available or to offer. If you can't get her to sign a prenup now, that guy is liable to take her for all she's worth if they get divorced.
do something for ˌall you are ˈworth
do something with as much energy and effort as possible: I shouted for all I was worth but no one heard me.