It sounds to me as if you are suggesting that the Daily Cash that is received when using the Apple Card for payments - that this is taxable.
Uh, no, it is not.
The Apple Cash is essentially a rebate from the payments you are making using the Apple Card. That is not interest, or capital gain. It is a rebate to you, a reduction in what you have spent using the card. Just like all of the various credit cards that offer cash back in various percentages.
None of these send users a 1099-K, because these cash rebates are not taxable.
Not taxable. It doesn't matter if it exceeds $600, or any other amount.
Have any of the folks here who have been using Apple Card for several years - have any of them received 1099-K forms? No, they have not. If the Apple Cash amounts were taxable, they would be sending out 1099-K's.
This is just common sense, one does not need to be a tax expert to understand this.