Costco's card is 4% on gas and 3% on restaurants and travel.
Depending on your spending habits, you are probably better off having 1 general purpose card, and then a card or two from the businesses you spend the most money at (target, amazon, walmart, costco etc) or one that fits your spending profile.
The Apple Card might make a good general spending card, but you should still have one that gets you 4-5% somewhere.
Chase Freedom gives you 5% on rotating categories. That combined with the Uber or Amazon card, you're getting pretty high percentages. Apple's 2% is just not competitive, and they don't even give you a signup bonus. It's basically a privacy card.
Not to mention cards like the Chase Freedom Unlimited where 1.5% is closer to 3% when redeemed through their travel portal.