hola necesito volver a instalar photoshop ya lo compre y por error lo borre

Which Photoshop and for which operating system?

Elements, Creative Cloud, Photoshop for iPad, Photoshop for Android, etc...

for cc versions, this page explains how to install cc apps by first installing the cc desktop app. the links at the page bottom allow you to select the installer suitable for your os, https://helpx.adobe.com/download-install/kb/creative-cloud-desktop-app-download.html

Sign in to your Adobe account on the Adobe website, go to the "Apps" tab in the Creative Cloud desktop app, find your Photoshop, and click "Install"