To get to system and security,
Click on the windows icon(4 little panes)bottom left of screen, or press the windows icon key bottom left on keypad.
From the pop up menu, click on the little cog wheel symbol(if you hover the cursor over it, it will say settings)
Left click cog and scroll down to System and Security,
Click on System & Security and yo have a menu on the left.
Click on windows update and check for updates.
You can get your lap top to upgrade at set times using the menu
Active Hours.
You can check your security status by clicking on Windows Defender then open windows defender.