Content in a forum. Duplicate content

I wanted to ask a question about my forum. I wanted to know if a repeated question is asked daily over the course of a year with multiple users asking the same thing or answering the same thing. For example “yes, it would be healthy to eat vegetables daily.” If this has been said 50 times on my forum would it be considered duplicate content ?

Can multiple users sign up and post repeated questions through the year pertaining to the same topic. For example “how much water should I drink?”

Appreciate any help, thank you 🙏🏼