Hi @MBtech - thank you for bringing your question to the Local Community. 
Before doing this I would recommend making a backup of your website by following this help doc: How to export a WordPress site from Local - Local
Do you know which setting you changed? Since you can’t access wp-admin, here’s a screenshot of the WordPress settings panel:
Both of those URLs (WordPress Address & Site Address) can be updated without access to wp-admin through the wp-config.php file.
If you click “Go to site folder” within Local, you can navigate to app > public > wp-config.php
If you open that in your preferred code editor, you should be able to update the URL with the following lines:
define('WP_HOME','https://yoursite.com');
define('WP_SITEURL','https://yoursite.com');
You may need to stop and restart the site in order for the files to sync.
I just tested this and it worked so long as I set both of those URL’s to the Local site domain.
Please let me know if that helps,
Sam 