Download Photoshop CS6 installer.

MODERN OPTIONS:
Photoshop or Premier Elements 2020 (approx $100, no subscription needed)
https://www.adobe.com/products/photoshop-elements.html

Creative Cloud Photography Plan (approx $10/month for 1 year subscription)
https://www.adobe.com/creativecloud/photography.html

Creative Cloud All Apps Plan (31 + apps & services)
https://www.adobe.com/creativecloud/plans.html

===========
Beware of fake Adobe reps who may contact you privately offering to sell you software or take control of your computer. It's a scam, run away!  Creative Suite is no longer sold by any legitimate vendor or retailer in any country.

If you purchased a digital download directly from Adobe, it's possible the download link is in your Account portal.  Please log-in to your account below.
https://account.adobe.com/products

For everyone else, Creative Suite downloads are no longer available.  To keep using CS6, you need your original disks.