Answer:
Basically Carson wasn't supposed to be playing with the ball in the house even though the park is a block away but he didn't think to just go to the park.
Justin told him that and now Carson is using his piggy bank money to pay for the broken glass. Carson is asking Justin how much money can he give Carson to help fix the broken glass. Justin is explaining to Carson that is wasn't even his fault and all of this could have been prevented if he would have just went to the park.
Step-by-step explanation:
Hope this helps.