How much can you make from deliveroo?

I want to start doing deliveroo justa wanted to ask about the pay so if i do my first delivery which they pay around £4.00 or bit more is that each delivery you do you get paid that much or is that how much you get for every hour dont know much how the pay thing works if anyone knows could you let me know thanks because some people do deliveries and only make £30 a day as i seen videos online probably depends on how busy it is too thanks.