You'll need PHP 7.4. Additionally, NodeJs is used in this repository to fetch assets, so it should be installed.
If you do not have Composer, you may install it by following the instructions at
getcomposer.org.
You can then install this project template using the following command:
composer create-project --prefer-dist --stability=dev yiisoft/app <your project>
In order to launch development web server run:
composer run serve