Oberlo only imports products from AliExpress in USD. That said, you can adjust your multipliers to your preferred currency rates and change the store currency in Shopify.
Follow these steps:
To do so, start by changing your store's currency in Shopify > Settings > General tab. (https://monosnap.com/image/vnon3wEl3FIA8JHdBN0PeZ7LDdT5oo)
Since products are imported in USD from AliExpress, you will need to exchange them for your desired currency.
Do this by adjusting your price multiplier in your Oberlo settings page (Oberlo > Settings > Global pricing rules). Just change your existing Price Multiplier by the ratio between USD and your currency.
For example, let's say your store displays all prices in AUD, your Price Multiplier is 1.8 and 1 USD = 1.39 AUD.
You can then update your Price Multiplier to 1.8 * 1.39 = 2.502.
After you import a product that costs $10.00 USD on AliExpress.com, for instance, your retail price would be $25.02 AUD rather than $18.00 AUD.
Now you prices will be displayed in your preferred currency at the correct exchange rate.