download the plug-in file and open readme.txt:
For example, here is my readme.txt:
=== Advanced Custom Fields Pro ===
Contributors: elliotcondon
Tags: acf, advanced, custom, field, fields, form, repeater, content
Requires at least: 4.7.0
Tested up to: 5.3.0
Requires PHP: 5.4
License: GPLv2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html