Hi yahya0335
Sorry for the delay, I was off due to the holidays Christmas. Happy new year.
In BuddyForms exist a feature to export forms, however, if you want to export registered users’ data you will need to use a third-party plugin, that allows you to export users with their respective usermeta data.
Context
Every time you create users thru a BuddyForms form with custom fields like Text, Phone, Number these custom fields will create usermeta entries on the usermeta table, these usermeta entries will have an ID (meta_key) that will match with the slug of the custom field related. For that reason, during the export process, you need to map these custom fields using their respective slugs to be able to have the whole data.
With regards to the third-party plugin to export registered user’s data, there are several options on the www.ads-software.com repository, eg WP Import Export Lite, this one is a good start, this plugin allows you to export any kind of WordPress data as Users, Posts, Page so on, also allow you include metadata on the export & import process.
Let me know if this answers your question, or if you any other questions left. Have a great day.