Yes, no, maybe. How’s that for an answer. The bottom line is Apple Cash does not do currency conversion. If you can provide the required information to open a US account (Social Security Number, US residence, etc.) you can probably create an Apple Cash account. Then the issue will be opening a US banking account, so you can fund the Apple Cash account. Most US banks will want a US address, SSN, and either a US state drivers license or state ID card. Bank of America and Citi bank may be more lenient with requiring lower documentation.
If you establish a US checking account, and open an Apple Cash account, you should be all set.
https://applecash.greendot.com/termsconditions/