That's not really how vaccines work. No force fields are deployed, you'll still catch COVID, but, you're immune system is now got some training in how to handle the situation.

I don't remember the promise that, the vaccine would end COVID, I do remember seeing somewhere that if vaccination rates were high enough ( greater than 90%??, been quite awhile now since I read that article ) that herd immunity could be achievable and the spread would eventually end. At least in the US, vaccination rates never even got close.