How to use a joystick to move a player?

Need some help, haven’t been able to find a tutorial to answer my question. Any help is appreciated

Your question is not clear. Do you want to make a virtual joystick? Or use a physic joystick of a gamepad? (Xbox, …)
anyway you have many tips, tutos etc on the web. Make your choice and come back if you need more help.
Some Google results

https://www.google.com/search?q=unity+use+joystick&rlz=1C1CHBD_frFR711FR711&oq=unity+use+a+joys&aqs=chrome.1.69i57j0l3j69i60.8388j0j15&sourceid=chrome&ie=UTF-8

GitHub - speps/XInputDotNet: C# wrapper around XInput, works with any Mono or .NET application (eg. Unity3D) This link is about an API to manage an Xbox360 gamepad.