does lightroom cc supports my retina display on my macbook pro mid 2015 ?

Welcome to Apple Support Communities

Here you have the Lightroom CC requirements -> https://helpx.adobe.com/lightroom/system-requirements.html As you can see, it works with OS X El Capitan, so you should not have any problem using it in your MacBook.

If you are worried about Retina display support, it is supported, so do not worry about that.

Try posting in Adobe's LR forum

https://forums.adobe.com/community/lightroom?view=discussions&start=0&numResults =30

You are welcome