Go to Admin Area > Plugins > Installed Plugins.¹⁾

Find the Who viewed me plugin - move mouse cursor over it, and click the Settings button.

You will be directed to the Who viewed me plugin management page.

Set any value to the Store user visits data for month(s) field.

Click the Submit button.

The users who viewed your profile will appear on My Dashboard page.

If the widget is empty, it won't show up on the dashboard page. You should have at least one view from another user before the widget shows up on the Dashboard. Login as some user, view your profile, then the widget will show on your Dashboard page.