I am new to the site and I proposed a 2 hours ago a run .... do you know how long it takes to wait for verification?

Depends on how busy the mod(s) for the game are. Standard waiting time is about a week. If it goes beyond three, you might consider contacting them.

if as you say time is too long, how can I contact them?

First, you can try directly messaging them on the site. If they haven't been active, most people should have links to their discord, twitter, twitch or youtube accounts and you can contact them there.

Ok thx