error= arduino:arduino not installed, needed for this board (attiny85)
cant find Anything on this any where
someone please help
This would indicate that somehow you don't have Arduino AVR Boards installed. This is strange because it's included with the Arduino IDE so it should always be installed unless you've messed with the installation or you're not using the Arduino IDE. My advice is to uninstall and then reinstall the IDE to see if that will fix the problem.
My ATTINY's needed the cores adding via the additional board manager and using
The following
"http://digistump.com/package_digistump_index.json"
"https://raw.githubusercontent.com/damellis/attiny/ide-1.6.x-boards-manager/package_damellis_attiny_index.json"
Note I have a variety of ATTINY and that is why I use both URL's seperated by a comma ","