Hi @swapnil.chavan18 welcome to the forums!
This was answered here: Multi currency enable - #2 by sjosey, but I will quote it below:
Unfortunately not; you can only process payments for the currency for your country. You can, however, accept currencies from anywhere, and the customer’s bank will handle the conversion/exchange rate. So, you can still accept a card from GB or EU, but charge them in USD and the conversion will happen automatically by the bank.
Please let me know if you have any additional questions or concerns, I’m happy to help!