If you want to load your Cash App card for free, then you need to add money to your Cash App card using a bank transfer. Use your linked bank debit card to transfer money to your cash app account. Secondly, ask a friend or relative on Cash App to send money to you. These two options are free to add money to your Cash App Card.
However, if you are unable to go with these two options, then you may need to pay some extra charge to load the card at stores. Several merchant stores like Dollar Tree, Walmart, Walgreens, Family Dollar, Rite Aid, etc., allow users to load the card. But, you may need to pay an additional $4 as a service charge. Loading cash Card at merchant stores or any other cash reloading facility is chargeable.