In our world, "funding" your qubes simply means allocating money from your Qube Cloud into all the qubes you have created.
This includes Bill Qubes, Spending Qubes, and Goal Qubes. You can fund all of your qubes individually, by tapping the Move Money icon 
anywhere you see it, and selecting Internal Transfer. Or, you can fund multiple qubes at once using the Funding Screen.
If this didn't answer your question, and you were actually wondering how to deposit money into your Qube Account, click here.