It's asking for the total original amounts of the loans - but the maximum you can put is $5,000 (even if you have more)
And, its because that is actually the rule for the credit - there is only a max of $5,000 original loan amount allowed to be used for the calculation. The maximum amount of the actual credit is $500. If you take a look at the form and follow the calculations, then you can see Line 11 mentions the $5,000 maximum directly on the form.