Tabs are a display feature only in the ACF admin. They are not a field that is stored in any way and the fields in each tab are not “associated” with the tab in any way. The tab field is basically only there to allow you to give a better, more easily understood layout to the person entering information.
On the front end of your site that layout of content is up to you. There are many ways that this could probably be done.
Welcome to the Advanced Custom Fields community forum.
Browse through ideas, snippets of code, questions and answers between fellow ACF users