yes
Fastpitch softball ASA bases are 60 feet apart.
11" circumference for women's slow pitch softball.
The first-base side. Or, depending on the league, the home team gets choice... but the home team picks the 3rd-base side almost 99% of the time.
An approved bat is a bat that has been tested and is approved by ASA. ASA stands for the Amateur Softball Association. Bats that are approved will have a stamp towards the cap of the bat that looks like home plate and it will have a year in it.
45 feet
The home dugout is the first base dugout.
30 feet
There is no limit to the drop; that only applies to baseball. The only requirement for a softball bat to be used in high school softball is that it must be ASA (Amateur Softball Association) approved and so marked on the bat. The current marking is the phrase ASA 2004 inside the outline of a home plate.
There are a number of associations in softball but I will presume you are asking about ASA (amateur softball association).
There is ASA softball which is club team in a way like AAU
asa, usfa, usssa