HELP!!!! Does anyone know exactly how many issues there are of the season 8 comic's please.

There is scheduled to be 40 issues altogether for Season 8. They are currently about to ship issue #39. #40 is expected after the New Year.
There are the collected volumes though. Every 5 issues (roughly a mini-story arc) were collected into one volume. So right now there are 7 collected editions. I'd think the final volume would be available in late winter of early spring.
Hope this helps.