Hi @guguan1992gmail-com
First, could you please remove the enqueue_scripts() function as it will duplicates the API?
Second, could you please let me know the ACF version you use? Please keep in mind that you need to use the acf/fields/google_map/api
hook if you use ACF free version and acf_update_setting() function if you use ACF PRO version. This page should give you more idea about it: https://www.advancedcustomfields.com/resources/google-map/#google-map%20api.
Thanks 🙂