A: Can I get the necessary advice at their school?

B: Sure, they have a wide network of counselors and student advisors on tap should you ever need advice or someone to confide in.

Note: Literally, it means “kept in a barrel or keg that is fitted with a tap and ready to be served.” For example: I love this bar, they have a lot of unique beers on tap. And by metaphor, it means “immediately or readily available” or “arranged to happen very soon,” alluding to a beverage such as beer that is ready to be drawn from a cask.