Claim earned cash??? If you earned anything that means that you opened up an adsense, amazon or kontera account. If that is the case than check your accounts with them, you can check up on your earnings there and ask for a withdraw.
HubPages are not related to your earnings, they are just a medium, they provide space for your articles and the opportunity to earn from advertisement, they have nothing to do with earned cash, payments, withdrawals etc.. Check the FAQ!