That depends what operating system you are using.
Generally speaking, try looking for new icons on your desktop.
If it's not there:
For Windows: Go to My Computer, Click the C:\ drive then go to Program Files (or Program files (x86) > Adobe > Photoshop.
For Mac: Press the Command and Space button at the same time. Then type in Photoshop, should be there.
Thank you. I was able to open photoshop.
For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind. 2 Tim. 1:7