I am trying to do centerline stationing but the texts are coming out too small and the tick marks are not showing up.
Edit the height of the stationing by modifying the Alignment Label style name you're using here:
Settings Tab of Toolspace>Alignment>Label Styles>Station>Major Station>Label Name>Layout Tab>Component Name>Text Height. (Ignore the bottom portion of the caption as it has nothing to do with the height).
Depending on how your style is setup you can likely edit the tic block height within this same style by selecting the appropriate component name.
Before diving into editing styles, make sure you have the scale set correctly for the drawing.
If the scale is wrong, the text will appear too small or too large....