ATTA BOY, AX!!
I'd need a big belt, with "world champian pianos player" buckle.
Are your works published?
Even if free, available online, you can make quite a chunk of money for your efforts, if you don't mind only a few thousand $'s for a work or two.
Try both:
www.rightscentral.com (use the www), or https://www.rightscentral.com
even www.copyright.com will get you to the main redirect.
Sign up. It's easy, and certainly worth the effort if you'd like to get your stuff out there. I definitely liked the boogie, but frankly not too keen on the title.
Larry, if you catch him in a good mood, might have other recommendations other than the standard ASCAP and BMI. I'm a member, but not sure if there are certain requirements. It was pretty much automatic as a college prof, years ago. The www.rightscentral.com has been easiest, I just get a check out of the blue a couple of times each year.
Once you are "out there" so to speak, you could submit works to Hal Leonard in the U.S., since they own or distribute pretty much all publishers worldwide in the U.S. But I know from experience their standard answer is "no." Oxford University Press is great for choral works, as they do look for unique and new, I have made a few bucks over the years through them. I think most every publisher is like a brick wall, like the recording industry, but the music publishers are always hoping to discover the next Arvo Part (don't know how to add an umlaut where required).
And for all of the helpful, friendly advice from your pal, me, I'd only take like 50% of royalties, unless you are already signed up to the above, in which case once again, I get screwed from being rich and famous.
If you're familiar with all of the above, well then SCREW YOU JACK.
See, I don't want you to think I all of a sudden got all nice or something.(!)