Macbook 15' retina display replacement

Your Options are as follows-

1. You purchase the display from a third party, including eBay etc., and install it yourself by following the instructions here ➔ iFixit - 2015 MacBook Pro Display Replacement.
2. You can start a repair process with Apple here ➔ Mac Repair - Official Apple Support.
3. You can find an Apple Authorized Service Center in your area and contact them to conduct the repair
4. Finally, you can perform a Google search and find just about any service shop who can conduct the repair in your area for a little cheaper than Apple or an Authorized Service Center.

Axel F.

One more option -- do nothing.

Your Mac is perfectly capable of running an external display or TV set instead of (or in addition to) the built-in display.