Your question is not very clear... it sounds like you want to know what the data type is for a shape's Top, Left, Right and Bottom properties. If so, they are all of type Single. If that is not what you were asking for, then you will need to provide a more detailed description for us.
I am not sure what alignment you are talking about (TextFrame maybe?), but there are built-in constants for Left, Top, Right and Bottom and they are xlLeft, xlTop, xlRight and xlBottom which are nothing more than the letters xl (lower case XL) followed by the direction name), so you should be able to use those directly instead of creating your own Enum for them (although their values are -4131, -4160, -4152, -4107 respectively, not 1, 2, 3 and 4 like your example Enum).