What is a FCP File Type?
FCP files are created by FontCreator when: File& &&&& rarr; New..., select File & &&&& rarr; Save Project... or Save Project As... FontCreator creates an FCP file to store the project, which can be closed and re-open for editing.
To open an FCP file in FontCreator select File & Rarr; Open..., browse to 'Locate File, select it, and click Open.
To export a TTF, OTF, WOFF or WOFF2 project, select File → Export Font, Export Font As..., or Export All Fonts, and choose the font.