How much money will i get back on 2 kids age 5:confused:

There is no "amount of money" you get back on any number of kids.
Each child that is allowed as a dependent will give you a deduction off the amount of tax you owe and if you over paid that tax during the year, yes you may get back money, but without knowing income, all the dependents how much was taken out for taxes over the year and more,
There is not even a quess that you can make.

Agreed; we need to know your total family income.

Dependents of any age simply affect the amount of tax you "might" pay, basically reduces it. But every household is affected differently based on the stuff we don't know from your message: income, taxes already withheld, other deductions (if any), tax bracket, state, weather reports, whims of Gondor... you get the idea.

Noted with amusement!