An Azure relational database service.
Please verify your Windows 10 is version 1607 or later. Please verify also that your computer meets the requirements listed here.
Try to install SSMS alone with the following command using Command Prompt and from the location where SSMS was downloaded on your computer:
SSMS-Setup-ENU.exe /Passive DoNotInstallAzureDataStudio=1
You can later download and install Azure Data Studio from here.