I'm not really sure since I'm still new to Linux distros in general
You can refer this from Ubuntu documentation on taking screenshots:
Take a screenshot
- Open Screenshot from the Activities overview.
- In the Screenshot window, select whether to grab the whole screen, the current window, or an area of the screen. Set a delay if you need to select a window or otherwise set up your desktop for the screenshot. Then choose any effects you want.
- Click Take Screenshot.
- If you selected Select area to grab, the pointer changes into a crosshair. Click and drag the area you want for the screenshot.
- In the Save Screenshot window, enter a file name and choose a folder, then click Save. Alternatively, import the screenshot directly into an image-editing application without saving it first. Click Copy to Clipboard then paste the image in the other application, or drag the screenshot thumbnail to the application.
Quickly take a screenshot of the desktop, a window, or an area at any time using these global keyboard shortcuts:
Prt Scrnto take a screenshot of the desktop.
Alt+Prt Scrnto take a screenshot of a window.
Shift+Prt Scrnto take a screenshot of an area you select.
When you use a keyboard shortcut, the image is automatically saved in your Pictures folder in your home folder with a file name that begins with Screenshot and includes the date and time it was taken.
Taking it and saving it to ~/Pictures
- Print - Take a screenshot
- Alt + Print - Take a screenshot of a window
- Shift + Print - Take a screenshot of an area
Taking it and copying it to clipboard
(just add Ctrl to the shortkeys above)
- Ctrl + Print - Take a screenshot
- Ctrl + Alt + Print - Take a screenshot of a window
- Ctrl + Shift + Print - Take a screenshot of an area