Mollie currently offers over 25 different currencies, but the settlement will always be in euros. Payouts in other currencies are not possible.
After a payment is settled you’ll see an overview of the payment in your dashboard. This overview includes the original amount in the foreign currency and the settlement amount in euros.
To see which currencies are supported and how you can use multiple currencies via the API, please consult this page. As a merchant, you are able to offer any of the supported currencies in your webshop.