You need to open up a pay pal account following the information found in the help icon on the home page. Also use the Hubpage search tool to get further help on opening up a PayPal account. At one time, Hubpage was sending out monthly checks but now the payment system is automated with Paypal and to the best of my knowledge checks are not being mailed out any longer.
If you are anticipating getting paid from the affiliates such as amazon.com or ebay the payment got to reach a certain plateau before any payment is made. The affiliates are a slow payment process unless you are promoting a product and Hubpage do not like for the hubbers to get over promotional. Also search the help forum on Hubpage to get more information about earning from affiliates amazon and ebay.