Work during the day and attend night school and finish up your HS Diploma. There is no reason you can't do both. You can then decide if you want to pursue post secondary education part time.
I believe in some places community colleges will accept you even without a H.S. diploma / G.E.D., although some "remedial" courses may be required depending on test scores. In theory it's possible to get a college degree without ever having earned a H.S. diploma first. Heck, as far as that goes, I believe it's possible - in principle - to get a Ph.D. without getting a H.S. diploma, or anything else, first although it would certainly be a rare accomplishment.[1]
[1]: https://academia.stackexchange.com/questions/17841/phd-witho...