@orionkidder I no longer remember the word count, it differs depending on the genre you're writing. SciFi usually is the highest.
If you are below the word count, they'll tell you to increase it if they like your story.
If you are over the maximum word count, they'll tell you to cut it down if they like story.
Stories which goes over the generally accepted max word count, especially in SciFi, are rarely allowed unless you already made a name for yourself or they saw a huge potential. They'll probably ask you if you already have a trilogy in mind, and encourage you.
So, basically, scifi soap opera falls into that over the word count.
Now, this is for physical books, because production + number of pages + prediction on number of sold books = cost.
With ebooks, it's a totally different situation. However, if you are looking forward to have a physical publication later for your ebook, you may want to consider the word count.
P.S. Last time I checked this information was on 2017, so things might have changed a lot since then.