Please check if the success information is shown.
If it is shown, I think maybe:
1) Check your mailbox, It may be moved to the spam
2) There is some issue in your mail server, please install this plugin: https://wordpress.org/plugins/wp-mail-smtp/
Config the plugin: https://wpforms.com/how-to-securely-send-wordpress-emails-using-gmail-smtp/
Please read this blog to learn more solutions.