Open the terminal and type:

sudo snap remove snap-store

When you right-click an application's icon and select Show Details, the Software app opens and shows details about that app. Of course in order to open the Software app it must be installed.

There are two different software apps in Ubuntu 20.04, Software enter image description here and Snap Store enter image description here. The Snap Store was originally named Ubuntu Software before the first point release of Ubuntu 20.04 was released. Now it is named the Snap Store and as its name suggests it has only snap packages in it. The Software app has both snap and .deb software in it. The Snap Store and the Software app can be installed alongside each other without removing either app.

If the app with the orange shopping bag icon that was named Ubuntu Software in Ubuntu 18.04 got removed in 20.04 it can be reinstalled by running sudo apt install gnome-software. My Ubuntu 20.04 was upgraded from Ubuntu 18.04. The old Ubuntu Software app's name was changed to Software by the upgrade and the color of the app's shopping bag icon changed from orange to light blue. Even though the name of the app has changed, the name of the app's package is still gnome-software.