1)   WordPress Plugin Uploader

1.    Log into your WordPress admin panel
2.    Navigate to Plugin -> Add New
3.    Click Upload.
4.    Click Choose File and select the Custom Woocommerce Discounts plugin package zip.
5.    Click Install Now.
6.    Complete the installation process as directed by WordPress and Activate the plugin.

OR

2)   FTP

1.    Decompress the .zip file you downloaded from Codecanyon.
2.    Find the Custom Woocommerce Discounts folder (this directory is created when you unzip the file).
3.    Upload the Custom Woocommerce Discounts folder to wp-content/plugins directory.
4.    Navigate to your Control Panel: Plugins.
5.    Under Custom Woocommerce Discounts, click Activate l Panel: Plugin.