I am not sure what you are saying, but to me the verse reads like this
Everyone on earth will worship the beast, except those who's name are written in the book of life.
I believe this to be speaking of believers, the Church, but I understand that, people can say no these are those who have given their life to Christ after the rapture
I think the verse is saying there are two kinds of people on the earth, Those who worship God and those who worship the beast. There is no middle ground
Rev 3:16 So then because thou art lukewarm, and neither cold nor hot, I will spue thee out of my mouth.