To the country where you are a tax resident. you need to select it from a list. so you can put romania, moldova, canada, usa, even if your address is not in list.
even blank or fake numbers can be added... but
they will report your TAX ID + name + dob , and if they︀ they don't find you ... they can say at the end of the year "why︁ why have 1 person with a wrong ID?!" not revolut, but the country you selected︂ your infos to be sent to