Career advice

I joined a plumbing company about 2 years ago with zero experience when i was 21 years old, started as a service tech with just drain cleaning for the first year and on year 2 started out doing small repairs here and there (replacing sink and tub drains, small water lines). I've been interested in getting more involved with the trade and eventually getting a license.

I was just wondering if i should stay as a service tech and get more experience, or should i start getting into getting a license