If you must download an old version, use Internet Archive (archive.org) search for “Adobe Photoshop 7.0” and look for user reviews. Avoid Softmany entirely.
Technically, if you have a legitimate retail CD key for Photoshop 7.0 from 2002, you are legally entitled to the software. However, Adobe does not host the installer on their public servers anymore. You would have to contact Adobe Support. They will likely tell you that version 7.0 is "end-of-life" (EOL) and no longer supported. Https- Softmany.com Adobe-photoshop-7-0 Download