Copy both extensions into your Paymenter installation

cp -r Virtualizor-Cloud-Modulev100/extensions/Others/VirtualizorCloudManager /path/to/paymenter/extensions/Others/
cp -r Virtualizor-Cloud-Modulev100/extensions/Servers/VirtualizorCloud /path/to/paymenter/extensions/Servers/

Set ownership to your web server user (example):

chown -R www-data:www-data /path/to/paymenter/extensions/Others/VirtualizorCloudManager
chown -R www-data:www-data /path/to/paymenter/extensions/Servers/VirtualizorCloud

Or upload via Paymenter admin if your version supports it:

Extensions → Upload

Then enable both extensions and run migrations:

cd /path/to/paymenter
php artisan migrate
php artisan optimize:clear