The three main jobs you can get as a skilled guitarist are 1) a session guitarist, 2) a performer, and 3) a guitar teacher. A session guitarist gets hired to play guitar on someone else’s recorded track, so they would spend a lot of time in recording studios or working from their home studio. A performing guitarist could be the main act on stage, or they could sit in with other bands when they need a guitarist. And a guitar teacher teaches other people how to play guitar. As a professional guitarist, you can do a combination of these three things (or all of them).