If 'Madam' is how you address a woman in a high position, should a Goddess be addressed as 'Goddam' ?

Only if you address a god as “Mad”.

“Madam” corresponds to “sir,” so you wouldn’t call a goddess “madam” or any variation on it unless you would call a god “sir” or some variation on that. Usually, a god is referred to as someone’s “lord,” which means a goddess would be their “lady.”

Only if it was spelled Madamn.

I guess pseudo-swearing must be really funny to you.

https://www.fluther.com/207350/we-have-a-lot-of-dams-wilson-dam-hoover-dam-named/

It’s ok. You can say “damn” if you want. It doesn’t actually work as a magic word.

Father gives life and mother gives birth. If God (father) is the creator of all humans, then you can call Goddess as Mother.

Question like this shows you’re good with words. I would suggest to use it for constructing words having positive vibes / meaning.