Arduino Installation Guide :

How to download Arduino IDE Software

Step : 1 First Download Software :
To get the most recent Arduino IDE for your PC, go to
https://drive.google.com/file/d/1BED0N958zlj9lo3wf3ouGTLb0IJcQdCr/view?usp=sharing

Or

Windows:
https://downloads.arduino.cc/arduino-1.8.15-windows.exe
Linux:
https://downloads.arduino.cc/arduino-1.8.15-linux32.tar.xz
MAC OS:
https://downloads.arduino.cc/arduino-1.8.15-macosx.zip

Step : 2 

 You can choose between the Installer (.exe) and the Zip packages. We suggest you use the first one that installs directly everything you need to use the Arduino Software (IDE), including the drivers. With the Zip package you need to install the drivers manually. The Zip file is also useful if you want to create a portable installation.

When the download finishes, proceed with the installation and please allow the driver installation process when you get a warning from the operating system.

Choose the components to install.

Choose the components to install.

Choose the installation directory.

Choose the installation directory.
Installation in progress.

Installation in progress.

The process will extract and install all the required files to execute properly the Arduino Software (IDE)