is your operating system version windows 10S? i ask because that means only apps purchased thru Microsoft Store can be installed. you cannot install 3rd party software . . .
You can switch Windows 10 out of S Mode to Windows 10, and then you can install whatever software you need to install, it is free to switch Windows 10 out of S Mode
Open the Settings App
Go to Update and Security - Activation
In the Switch to Windows 10 Home or Switch to Windows 10 Pro section, select Go to the Store. (If you also see an "Upgrade your edition of Windows" section, be careful not to click the "Go to the Store" link that appears there.)
On the Switch out of S mode (or similar) page that appears in the Microsoft Store, select the Get button.
After you see a confirmation message on the page, you'll be able to install apps from outside of the Microsoft Store.
