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This is typical behavior for a squash plant. They will produce mostly male (non-fruiting) blossoms early in the season and will gradually start to produce more female blossoms as the season progresses. Give it some time and you will see it start fruiting.

Yes, snails can do some harm by feeding on the leaves, or worse, by getting into other areas of the garden and having themselves a feeding frenzy. It is best to get rid of them. This article will help with that: https://www.gardeningknowhow.com/plant-problems/pests/organic-snail-control-how-to-control-garden-snails.htm

This article will help with that: https://www.gardeningknowhow.com/edible/vegetables/squash/how-and-when-to-pick-acorn-squash.htm

When most of the squash takes on a yellowish-whitish appearance (as opposed to a greenish-whitish appearance), then they are ripe.

When it is a deep glossy green, with a yellow spot where it was laying on the ground, it is ready to harvest. This article should help: https://www.gardeningknowhow.com/edible/vegetables/squash/how-and-when-to-pick-acorn-squash.htm

I think you may have white acorn squash. There may have been a mix up with the seeds or a mislabled plant. White acorn squash are ripe when white. I would give one a try and see if this is the case.