Select Start > Settings > System > Display.

If you want to change the size of your text and apps, choose an option from the drop-down menu next to Scale and layout.

To change your screen resolution, use the drop-down menu next to Display resolution. Note: You should use the Recommended resolution. If you change the resolution, content might appear blurry or pixelated.

If you have multiple displays, you can change how they're arranged. This is helpful if you want your displays to match how they're set up in your home or office. In Display settings, select and drag the display to where you want. Do this with all the displays you want to move. When you're happy with the layout, select Apply. Test your new layout by moving your mouse pointer across the different displays to make sure it works like you expect. 

In the Multiple displays section, select an option from the list to determine how your desktop will display across your screens.

Once you've selected what you see on your displays, select Keep changes.

If you don't see a setting you're looking for, try searching for it in the search box on the taskbar.