Example manual Installation of hide price extension in Magento 2.x, Download the extension package.
Download from here.
Extract the zip file contents
Create the folder structure: app\code\Magecomp\Hideprice
e.g. C:\xampp\htdocs\dmt\app\code\Magecomp\ Hideprice
Upload the folders and files, via FTP as necessary to the folder \ Hideprice
Open Command line in folder root of Magento and run following commands:
php bin/magento setup:upgrade
php bin/magento setup:static-content:deploy
php bin/magento indexer:reindex
php bin/magento cache:flush
Navigate to Stores/Configuration, if you can see the extension tab, it is installed properly.
Configure the extension as necessary.