Winforms - Find And Reference A Certain Form?

I am currently making an application to aid me in testing another separate application (both are made in VB.NET). I want my tester app to be able to enter info in a form on my other application. Since I have familiarity with both applications, I know the name and everything about the form I want to do things with on my testee app. My problem, is that I need a way to use this information of the testee form to get a handle or something that I can actually reference that form with in code for my tester app.

How can I go about getting this form? my only experience with something similar was getting the handle of a main window of a process, but that was a bit easier by doing this:

Dim iTunesID as intptr
for each process as process in process.getprocesses
if proc.mainwindowtitle = "iTunes" then iTunesID = proc.MainwindowHandle
next

However even that I am not really happy with because it needs to iterate through every process. and even from this, I am not really sure how to reference my specific window, since it isn't the main window in this case. I have tried searching for how to do this, but my search is a bit too vague I think as I just don't know what methods are available to use to do this or assist in doing it.

my first thought was something similar to above but with something like "for each form as forms.form in 'forms.formsrunning'" kind of thing, but I don't even know a command to get forms running, and though I guess I could probably find one, I am hoping for a better solution than iterating through all processes/forms.