If you are running MSFS Addons Linker you should be able to open the Options dialog (Leftmost Icon on the toolbar or use the Tools/Options menu). Use the Dropdown list labeled “Choose your FS version” and select MS Store/DVD or Steam. If you pick the fast launch version then the simulator is started without the initial splash screes.
In the Microsoft store version you can not access the fs2020.exe file. The file is protected and hidden in an image file that is not supposed to be accessed by the user.