If you don't have Google Asense, your only earnings will be from your own associate accounts with Amazon, Link Share, etc if sales are made. Click Bank is not allowed. If you do have Adsense, 5 days here with 4 hubs isn't going to earn anything but pennies, if that.
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No, you cannot earn on Hubpages without a Google Adsense account. To acquire a Google Adsense account, you will have to first write at least 30 quality Hubs here and then you can apply for a Google Adsense account from your your earnings' settings page. It takes anything from a few hours to a few days to get accepted.