I got a phone call from apple that my iCloud account has been hacked

No. They only call people if that person filed a support request or bought something from the online Apple Store.

(200213)

Received multiple phone calla about unusual transactions on my iCloud account. Is this a scam?

If they claimed to be from Apple, yes.

If they claimed to be from your financial institution, it depends on their policies.

(200425)