When calling acf_form() you can set the “post_title” setting to true. This will add a field for adding the post title https://www.advancedcustomfields.com/resources/acf_form/
If you want this field to be dynamically generated then you need to add an acf/save_post action that updates the post with your desired title. https://support.advancedcustomfields.com/forums/topic/using-acf_form-add-post-title/
