Apple Cash transfer fee

From the provided link:

Transferring money to your debit card or bank account

• You can transfer a minimum of $1 to your debit card or bank account, or your full balance if it's under $1.
• You can transfer up to $10,000 to your debit card or bank account in a single transfer.
• Within a 7-day period, you can transfer up to $20,000 to your debit card or bank account.
• For Instant Transfer, a 1.5 percent fee (with a minimum fee of $0.25 and a maximum fee of $15) is deducted from the amount of each transfer.
• With Instant Transfer, limits don't include fees.

To transfer money to your debit card, you must have an eligible debit card in the Wallet app.

There is no fee unless you selected instant transfer, in which case the fee is shown to you.

Apple Cash and person to person payments limits - Apple Support