Welcome to our forum. Are you looking for a first or second edition screen depending upon age of your FP2? Details can be found in this resource:
https://forum.fairphone.com/t/how-to-recognize-the-new-fp2-display-module/35519
Presumably looking for a used one a bit cheaper than one available from Fairphone themselves?
https://shop.fairphone.com/gb_en/spare-parts/filter/fairphone-type/fairphone-2