get illustrator & photoshop Cs 5

CS5 is not being sold by Adobe, so if you mean you want to purchase it, that is not an option thru Adobe. 

If you mean you want to download it because you already own it, then downloads are available.

Download and Installation Help -

https://helpx.adobe.com/download-install.html

CS5 - https://helpx.adobe.com/creative-suite/kb/cs5-product-downloads.html

You can also download the trial version of the software thru the page linked below and then use your current serial number to activate it.

Be sure to follow the steps outlined in the Note: Very Important Instructions section on the download pages at this site and have cookies enabled in your browser or else the download will not work properly.

CS5: http://prodesigntools.com/all-adobe-cs5-direct-download-links.html