Have you already installed the NI VISA driver from the link below?
com 1 is the slot I used but I can't find on Labview at the sametime on arduine I already can select the port
This makes me think you are running Arduino IDE at the same time as LabVIEW, and the hardware might be locked by the software. If LabVIEW is the only thing running, does it see your COM port? Did you try reinstalling or repairing NI-VISA?