I submitted a game, where and when will I receive a response?

Let's say I want to submit a game; I have a question about it.

What would I put in the "Please provide a link to a video of your run." requirement if I am requesting multiple categories for the game?

Isn't the no relics option useless now because there is always a relic in a game or am I just hallucinating?

I'm new to Speedrun.com (my account is a few months old but I'm only using it frequently today), what can I make threads about?