Yes Zucchini can be eaten raw if you want to eat it that way.
Most people prefer to eat Zucchini cooked as it tastes better and is more appetizing and easier to chew, digest etc.
But Zucchini is edible raw or cooked so you can cut up Zucchini and eat it raw or add it raw to salads, sandwiches.
The Zucchini when eaten raw has more nutrients, minerals etc and more health benefits than cooked Zucchini does.
Cooking the Zucchini kills some of the good nutrients but even cooked Zucchini is still pretty healthy.
I cut up Zucchini and add it to salads and it makes a great healthy salad but I also like to eat cooked Zucchini as well.