There are 2 easy ways to find out what version of laravel you are using. They are by running php artisian commands on CLI or checking the files.
Method 1: Check Laravel Version using CLI / Command Prompt
$ php artisan --version Laravel Framework 7.12.0
The tells us that the Laravel Framework version we are currently using is 7.11.0
Alternative to the above command is
$ php artisan -V Laravel Framework 7.12.0
Method 2: Check Laravel Version using file
Open the following file using command line or any editor
/vendor/laravel/framework/src/Illuminate/Foundation/Application.php
In this file you will find the following
/**
* The Laravel framework version.
*
* @var string
*/
const VERSION = '7.12.0';