Thread: Q about inc. entropy

I just came across this forum from a google search and I do not exactly have a vast background in physics so I apologize if my question is inherently flawed in some obvious way but here goes.

As I understand it the idea of a big bang singularity came about based on the concept that the universe is expanding so at some point in the past it would have been extremely tiny. I do not mean to start another topic that I am sure has been discussed many times before but thinking along the same lines if the entropy of the universe is also always increasing, looking far into the past the universe would have very little entropy; potentially 0 entropy? Are there any articles/papers that discuss how much entropy the universe would have had at the time of the big bang/how that could have affected the universe's formation?