How do i find out about my Credit limit for this card?

You can look at your card information in the virtual Apple Card once it’s added to the Wallet app on your iPhone.

View your available Apple Card credit details or request a credit limit increase - Apple Support

>> View your Apple Card credit limit and credit details

On your iPhone:

1. Open the Wallet app and tap Apple Card.
2. Tap the More button , then tap Card Details .
3. Scroll to Credit Details to see your account Credit Limit, Available Credit, and APR.

On your iPad:

1. Open the Settings app.
2. Scroll down and tap Wallet & Apple Pay.
3. Tap Apple Card, then tap the Info tab.
4. Under Credit Balance you can see your Card Balance, account Credit Limit, Available Credit, and APR. <<