I'm a huge data nerd, and I love the resources that the U.S. Bureau of Labor Statistics put out, because they answer your *exact* question for almost any industry or employment you can think of!
For Registered Nurses in Florida, they earn a median salary of $69,510 per year; nationwide, they earn a median salary of $75,330 per year. The median wage is the wage at which half the workers in an occupation earned more than that amount and half earned less. The lowest 10 percent earned less than $53,410, and the highest 10 percent earned more than $116,230.
The BLS maintains an online database where you can see not only pay information, but also learn more about what job skills/degrees/certifications would be useful, what the outlook for the industry is expected to be over the next ten years, and even dive into the employment and pay data by state or geographic location. I highly encourage you to take a look at the data yourself; you can find the statistics for Registered Nurses here: https://www.bls.gov/ooh/healthcare/registered-nurses.htm