•The website has no contact information. A legitimate business has a way for you to reach them. Look for an "About" page that offers information on the company or CEO, along with a phone number, address or contact email. (Try calling the number to see if anyone answers.) A website with only a contact form and no other way to get in touch with an actual human is suspicious.
How much will you make? I think my best month with Google AdSense was almost $5,000 over the last ten years. That amazing month blew my mind since it was actually near the beginning of my blogging journey. When you go from making zero to $5,000 in a month, that will rock your world. For me, it also got me even more excited because I knew there were other ways to monetize.