apple credit card how do you see your credit card limit before you apply for the apple credit card

There is no option to see the limit until you apply and your application is approved. When you are approved you will be notified. If it isn't satisfactory you don't need to accept the offer.

Also see the following from How to apply for Apple Card - Apple Support for other information, including the following:

You can apply for Apple Card without impacting your credit score. If your application is approved and you accept your Apple Card offer, a hard inquiry is made. This may impact your credit score.