I recently got a divorce and we agreed 50/50 on everything that has something benefit for the kids and she doesn't wanna pay or agreed how can I make

The question is too unclear to provide any detailed response, other than the general one that if the decree requires payment of some cost and the other parent is not doing so, make sure you document the request for contribution in writing and then you can file a motion seeking an order compelling the payment, or garnishing funds, or otherwise solving the problem.