Do you want to write on something that is painted with acrylic paint, or do you want to put acrylic paint in your pens?
I’d advice against acrylic paint in your pens, because acrylic is not water soluble once it’s dry. It will probably clog your pens and you may never be able to clean it.
As for writing on acrylic paint with waterbase ink: just give it a try when the paint is dry. And judge for yourself if you like the effect. And show it to us here, with an explanation of what you’ve done and if you like it!