Shalom, my first time in jury duty in miami area, Is reasonably to keep my Kippa in the court house and attend like juror ?

Definitely. America guarentees freedom of religion explicitly for this purpose. As far as Iv'e heard, Florida is home to many orthodox Jews who wear their kipah publicly. In any event, may I suggest making Aliya to live in Israel asap, where you definitely don't have to worry about such things!