Export invoice in us$

In INR only.

And actually you should prepare Two Invoices one for GST INR and second is export invoice customs .

Thanks. If in INR, what value should I enter? (1) The US dollar rate on the date of invoice was higher compared to the US$ rate on the date of receipt of credit from bank. (2) On receipt, the bank gave credit at its own US$ rate (not inter-bank rate). (3) How should I convert the invoice value to INR?

you have to mention export value at the time of export.