I checked it at my localhost as well as on liver server.
Is this bug or anything is missing by me ?
I seems that same things is not working into magento1.x too. Is this
problem into Webservicex api or into stable version ?
Magento – Currency Rate not importing from Webservicex in magento 2
currency-ratesmagento2web services
Best Answer
WebserviceX has been down for some time now. Its API is now returning a -1 for all currency conversions.
You can test it here if you want: http://www.webservicex.net/CurrencyConvertor.asmx/ConversionRate
I suggest you switch to another currency API.
Fixer.io is now available on Magento 2 out of the box and can be used instead of WebserviceX.