Yes if you are making exports without payment of Tax on submission of LUT, then you are eligible for refund of input credit. You can apply for refund of input by filing of RFD-01A in portal wirhin two years from end of the month in which export is made.
On filing of online application, manual submission of various documents like declarations, inout register, sales register, realisation statement, correlation statement, GSTR-2A and Input register reconcilation, Manual vendor invoices for those not available in GSTR-2A, FIRC or bank confirmation of receipt in Foreign currency and such other documents.
However if yoj are into both local and export of services, the proportionate refund is only possible.