I was waitlisted at UCR, but got a Financial Aid Scholarship. Does anyone know if this means anything?
You need to ask them. As soon as the admissions office opens today, give them a call.
Some schools calculate financial aid for all students on the waitlist, so you have that information if they are able to offer you a spot and you can make a decision quickly. Also, they can use it when they offer a spot to someone (they will know how much FA was used by the students who have already accepted spots so they know how much is left in their budget for next year).
But yes, the only way to know for certain what it means at any specific school is to ask them.