Your account statement would read in rupees if you deposited the currency through the payment platform. Also, if the online Casino is only INR-compatible, it may convert the funds in your account to rupees using a standard converter.  However, this is usually not the case because not all platforms offer INR as a currency. Also, if it is an international casino platform, USD may be the main currency, and the site may convert your account statement to dollars. You can visit your dashboard or account profile in your registered online Casino and check the statement. Also, if most of the bonus rewards on the site are in USD, chances are that your account will read in dollars.