In order to create a custom link that redirects users externally, you will need a custom functionality before adding it within the profile page tabs.
Here’s an example of you can set it for your site. The link in this example will redirect users to Google:
From the example above, you will need to change the name and the links according to what you would like to have within your site, particularly on these lines:
'name' => esc_html( 'Google' ),
if ( 'google' === $tab ) { return 'https://www.google.com'; }
You can add this
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