Can i use Quicken with the Apple card?

Not at this time. Mint is the only budget/financial app that supports Apple Card and they are considering adding Apple Savings, this is per their support team. It would be up to Quicken to support Apple Savings. Have you asked the Quicken support team about support for Apple Savings?

Yes - that works for the Apple credit card. However, the new Apple savings account has a bug when generating the QFX file that causes an error in Quicken.