score:4
We don't. There is no point where you are required to donate any amount of money. That's just silly. This is largely because a strict tithing rule is bordering on Pharisaic β someone in absolute poverty should not be required to
On the other hand charity is a requirement. Now, charity does not mean a gift of moneys, though that helps, rather it means a gift of self (close to the concept of agape in Greek). This is why you have quotes like this in the Catechism (p. 1974, emphasis mine):
The evangelical counsels manifest the living fullness of charity, which is never satisfied with not giving more. They attest its vitality and call forth our spiritual readiness. The perfection of the New Law consists essentially in the precepts of love of God and neighbor. The counsels point out the more direct ways, the readier means, and are to be practiced in keeping with the vocation of each: