To check the version of PrestaShop that is currently installed on your website, you can follow these steps:
Log in to the back office of your PrestaShop website.
In the top right corner, you will see the version number of your PrestaShop installation.
You can also check the version by looking at the footer of the back office, at the bottom of the page, the version is also displayed.
Another way to check the version of PrestaShop is by looking at the config/settings.inc.php file in the root folder of your PrestaShop installation. Open the file in a text editor and look for the line that starts with _PS_VERSION_.
If you have access to the server and to the FTP client, you can check the version by looking at the readme.txt file in the root folder of your PrestaShop installation.
Note: It’s important to keep your PrestaShop installation up to date to ensure that your website is secure and has the latest features and bug fixes.