hi, i want to know if the mobile app is multicurrency

It is not.  Adding multi-currency support to Mobile is Planned but no date for that has been communicated.  If you want you can add your support to this Plan by voting for it here:  https://community.quicken.com/discussion/7467360/like-to-be-able-to-sync-foreign-accounts-currencies-with-quicken-mobile-85-legacy-votes/p1.