If you can’t use it and you don’t want to store it, give it away. Charitable organizations, churches and the like may be happy to take it.
Don’t put latex paint still in liquid form in the trash. Allow the paint to dry out and harden before disposing of the container.
For detailed information on how to dispose of paint, visit the Montgomery County Recycling website at: https://www.montcopa.org/1996/PaintMontgomery County Recycling