This is a very simple-sounding question, but unless you know exactly what a read is, it's a difficult one to answer. I hope you don't mind that I looked at some previous questions you asked, and from what I read I understand that you're trying to do some bioinformatics without much experience or help from inside your lab. This is a really unfortunately situation.

Questions like "how do i run X" have only two outcomes - you run X, or you fail to run X.

Questions like "how many reads do I have" however, have multiple possible answers. You really need to know the difference between each answer - especially when working with miRNA. I would seek help from someone in your building who can help you learn the basics quickly :)