Armory dowloading only blender

I downloaded armory 5 zip file and after unzipping it when I open blender in the file, it opens normal blender2.79 without any armory properties. please help.

You need to Install Armory3D as Add-on in Blender. Just follow these instructions:
https://github.com/armory3d/armory/wiki/setup

PS:
The Armory Docs on the Armory3D website seem to be outdated. Use the Wiki on Github instead

bro I need armory addon for blender2.79. and all sdk s I found were for blender2.8

Sorry didn’t quite get the problem from your description. Tried it myself and ran into the same problem. When I tried to manually install Armory from the legacy version to a fresh blender 2.79 it told me the addon was created for 2.80. It seems odd that even the legacy versions are updated to blender 2.80