Emulator question

Is there a way to select a different screen size for the emulator? or android version?
I’d like to see it the same as my own phone, does that make sense?

There are other 3rd Party Emulators around, Google search should find them - but the best way to see how the App looks on your phone is to simply run App Inventor Companion on it.

If you’re willing to install Android Studio, you can use it to configure an emulator to match your phone. Just have that emulator running before selecting the Emulator option from the Connect menu. If you do opt to go this route, you should copy the version of “adb.exe” from the Android SDK that Android Studio configures over the version in the “commands-for-Appinventor” part of where the App Inventor tools are installed (C:\Program Files (x86)\AppInventor on Windows, /Applications/AppInventor on macOS, /usr/google on Linux).