Blocked

More likely it means that the person you called isn't able to FaceTime for some reason . See:

If you can’t turn on or sign in to iMessage or FaceTime - Apple Support

If you can't make a FaceTime call on your iPhone, iPad, or iPod touch - Apple Support

miya293 wrote:

I just sent a text and it sent green then I tried to FaceTime later on and it said the contact card isn’t able to FaceTime…Does that mean I am blocked??

There are no indicators that you have been blocked.