Nobody can answer this, it all depends on your ability to build a business on the internet, what experience you have, and your ability to build a good list.
So to start you will probably make nothing, the thing with wealthy affiliate you are given the opportunity to get good training and an internet business operating for a very small outlay.
The potential to make a lot of money is there however its not easy, if you are not experienced then try to find somebody to mentor you this can help cut corners as the learning curve is severe.
All the best.
John

I hear this question all the time, but the real answer is "how long is a piece of string"?
It depends on so many factors.
All I know is that there is no ceiling on your income online, and that if you keep working hard and learning, the results will eventually follow.
The worst thing you can do is to get impatient with success.
The key is to look at the bigger picture, focus on the work you are putting into your site, the value you are creating for others, and celebrate your progress along the way.
A quote I am reminded of is "people often overestimate what they can achieve in one year, but underestimate what they can achieve in 5 years" and that is why people often give up before they succeed.
Best of luck :-)