20 is still young, I'd get a degree, it might help land you a job, it might not, but the main problem at the moment, and I'm speaking about my country, though I think it goes for multiple countries, is that employers now have too much choice. Let's say company X is looking for a new web developer, giving the current status of the market 50 people apply for the job, so much choice, lets cut that down, eliminate all the ones without a degree, still 40, lets delete all the ones with a degree and zero experience, 25 ... That's better, and then lets see what else they can use to cut down (how much experience, knowledge, place of residence,...).

So, you have experience, now I'd go for a degree and keep that experience up as best as possible. Besides, later on in your career, that degree might help you get other jobs, promotions, better pay ...

Just my 2c.