For development, you will only need Node.js (v10.16.0) installed in your environement.
Just go on official Node.js website and download the installer (v10.16.0).
Also, be sure to have git available in your PATH, npm might need it (You can find git here).
If the installation was successful, you should be able to run the following command.
$ node --version
v10.16.0
$ npm --version
6.9.0
$ git clone https://github.com/Xdabier/insta_scheduler.git
$ cd insta_scheduler
$ npm i
Replace the config.json/username & config.json\password nby your instagram username and password.
$ node index.js