Hi Ruby, thanks for your question.
You have two options, depending on what you prefer to do.
Option 1: Hide Elementor Overview widget using the Screen Options menu
This is the easiest option. You simply hide the Elementor Overview widget from being shown on your dashboard page.
In the top right corner, you will see the "Screen Options" tab. Click it to open the panel. Then simply uncheck Elementor Overview to hide the widget. Here's a quick walkthrough:

Option 2: Remove Elementor Overview widget with a code snippet
The other option is to remove this widget completely by using a small code snippet, which should be added to your theme's functions.php
file. Ideally, you would want this added to your child theme's functions.php
file.
function disable_elementor_overview_widget() {
remove_meta_box( 'e-dashboard-overview', 'dashboard', 'normal');
}
add_action('wp_dashboard_setup', 'disable_elementor_overview_widget', 40);
Once you add this to the file, save it and the Elementor Overview widget will be gone.
I hope that helps. If you need any more help, don't hesitate to ask.