Ahrefs Question

When I overview a keyword in Ahrefs, under the KW difficulty meter there is a statement saying "You'll need backlinks from ~9 websites to rank top 10 for this keyword!"

What does that actually mean? If I make 9 web 2.0 backlinks, will my site get ranked in top 10?

Can someone explain what is the meaning of it?
I'm new to Ahrefs and don't know much about it.

Thank you!