I think i may have just figured this out.
Using an XY chart i created a bar graph using the column renderer. then i copied the series and changed the renderer to line. this adds the property “Bullets”. Choosing the label bullet type and then linking to the proper field in the data i was able to have labels. i set the stroke width on the line to 0 to make it disappear and played with the offset property to make the label appear at the top of the bar.