I already add cash from bank and it still not load to my apple cash

Are you sure it is added from the Bank or the Bank's Debit Card which is on file (Apple Wallet)?

How to add money to Apple Cash

After you set up Apple Cash1, you can add money to your balance using the debit or prepaid cards2 that you already use with Apple Pay in Wallet. If you don’t already have one of these cards in Wallet, you need to add one before you can add money.

1. Go to your card info:

• • iPhone: Open the Wallet app, tap your Apple Cash card, then tap the More button . 
  • iPad: Open the Settings app, tap Wallet & Apple Pay, then tap your Apple Cash card.
  • Apple Watch: Open the Wallet app, tap your Apple Cash card, then tap Card Balance. 

1. Tap Add Money. 
2. Enter an amount. The minimum is $10.
3. Tap Add, then confirm the U.S. debit or prepaid card2 that you want to use to add money, and confirm the correct billing address. To use a different debit or prepaid card, tap the arrow  next to your card, then choose a card. 
4. Confirm with Face ID, Touch ID, or passcode.

To make sure that your balance is updating, you need a cellular or Wi-Fi connection.