Welcome to our forum.
On this site you can try the Dating & Friendships subforum
. On other sites:
Some of those are dating sites, some are links to local poly groups. You can also google "polyamory" with the name of your state or city, and see what turns up.
Be patient, as this can take some time. In the meantime, have a look around on this site and read about what does and doesn't work. Prepare yourself for the time when you do meet someone.
Glad you're here.