It's extremely variable. An advisor could give you business advice or make introductions or review your code or discuss product strategy. You could meet with t

It's extremely variable. An advisor could give you business advice or make introductions or review your code or discuss product strategy. You could meet with them every week or every month or twice a year, or everyday while your company is getting started. The more they give you, the more compensation they get. An advisor might get .1% per year of service (in equity), or as much as several percent of the company.