How Big is God, how many people are in Him?

About 122 Billion from the beginning to now.

If you're asking how many people have ever lived then it seems about 96,100,000,000. This is only an estimate because many of these people lived during prehistoric times and as such we have no records.

Well, if you read the following, I think you might get some visual?

In Islam, it's stated that there are few Angels, whose shoulder is so big, that to get to the end of the shoulder from one earlobe, it takes 700 years.

Just an ANGEL (only few are this big though).

So imagine if His creation, Angel, is this big, how big will he Himself be?

Hindu word for Almighty is Paramatma (Infinite Soul).

the hands that he raise wide are all the people with him.

for this no maths needed only common sense.

All those in Christ will live forever. I like to simplify math.