Extract zip file to a local temporary directory and run setup.exe.
When prompted by the installer, provide the install location, the database password, and begin the installation.
When the installation is complete, note the provided connection strings on the final screen.
Note: When Windows is rebooted, the pluggable database (eg: XEPDB1) will not be open and available. For details on how to automatically open the pluggable database when Windows starts, see Chapter 7 of the Oracle Database 18c XE Windows Installation Guide.