The component, as you are using it (scomp & comp) consists only of a single symbol. There is not an object like what you describe, an scomp which includes several symbols.
But let us digress for a moment, to the fast way to do exactly what you want. If you are working in an integrated design environment with DxDesigner and Xpedition, and you are constrained to use only DxDesigner for this task, just do it in Xpedition. There you can select an entire component, and quickly get a collection of all the nets attached to the component.
dim comp as mgcpcb.component
dim nets as mgcpcb.nets
comp = pcbdoc.findcomponent(refdes)
nets = comp.nets
But, if you must use DxDesigner for this task, it is a bit more complicated.
What you have to do is make a collection variable of nets. Then loop through all the components and select them out by refdes as you have already done. For each component, you'll do something like the following:
Dim nets as List(of viewdraw.net)
Dim net as viewdraw.net
Dim comps as Object
Dim comp as viewdraw.component
Dim conns as Object
Dim conn as viewdraw.connection
(get comps with the query like you already did)
for each comp in comps
if comp.refdes = myrefdes then
conns = comp.getconnections
for each conn in conns
Now you have a list of nets. You can use the ViewDraw nets collection, as you can get using the view.query(32,1), but working with those collections is a bit more clumsy than the generic vb collections, so it's just easier to use the List. If using a .net environment, you could also use an arraylist, which is even easier because it will hold most any datatype without complaining.
With the list of nets, you can loop through and do whatever you need to with each net.