FC Points is the FC currency used on the UT Store exclusively to purchase packs and Draft tokens. They were first introduced on FIFA 12 Ultimate Team, exclusively for PC users. One year later, EA Sports added this currency to the other platforms. A huge part of Electronic Arts profit is made thanks to FC Points sales.
After buying them, they will be immediately available to spend on the full FC Ultimate Team ecosystem, which includes the console, the UT Web App and the Companion app.