Your job opportunities are going to be severely limited with JUST a high school degree.
There are plenty of good paying jobs that don't require a 2 or 4 year college degree but they still require some extra training and certification classes.
One example would be, going to culinary school to become a chef. This is generally a 1 or 2 year program. It is strongly recommended, but not required, that you already have some experience working in the kitchen of a restaurant before attending. First, this will let you decide if this is something you really want to do, and second, it will give you more context for the skills you will be learning in school.
Other examples would be various workman jobs - construction, electrician, plumber, etc. You can make some good money as these but you will need to work under someone to learn the ropes, and if you want to be your own boss you'll need to pass your state's contractor licensing exam.