Generally speaking you should receive your first paid survey within the first week or two. It really depends on your "profile" (male or female, your location, etc.) and the current needs of our clients. Sometimes you'll receive your first paid survey within the first day or two of joining SurveyClub.
You're not going to be eligible for every survey, because some surveys are targeted towards either men or women, or those who live in a certain area, etc. For example, if you're a woman and the current survey is about men and their grooming habits, you won't be invited to take that survey.
If you don't receive an invitation to participate in the current survey listed on our homepage when you register, it simply means that you're not eligible for that survey. You should receive your first paid survey invitation soon thereafter, and in the meantime we suggest you read our Special Report.
While you're waiting for your first survey, we highly recommend that you also register with some of our partners. We have partnered with the Top 25 sites that pay for surveys, and once you register with all of them - for FREE - you'll receive more paid surveys then you can handle.