Hi accounts,

To enter an invoice or bills in foreign currency, multi currency option needs to be turned on. Please go through this help link https://community.intuit.com/articles/1207894-how-do-i-add-a-foreign-currency-account to know how to set up multi currency in QuickBooks. 

After setting up multi currency, please create a customer or supplier under foreign currency and create invoices or bills.

I want to raise an export invoice in INR without GST %