Is the ThinkCentre Neo 55a Gen 6 good for office work?

Yes. The Ryzen 5 220, 32 GB of RAM and 1 TB SSD cover email, spreadsheets, video calls and heavy browser use. It is not built for gaming or 3D rendering.

Can I upgrade the RAM or storage later?

All-in-ones are harder to open than towers, and Lenovo's business models usually allow some memory and drive access. Confirm the exact service manual for this model before planning an upgrade.

Does it come with a keyboard and mouse?

Lenovo business all-in-ones are typically sold with a wired keyboard and mouse, but bundle contents vary by listing. Check the box contents before ordering.

Is the screen good enough for photo editing?

The 23.8-inch panel is fine for everyday work, but this class of business all-in-one usually ships with a standard sRGB display, not a wide-gamut one. Serious photo work would benefit from a dedicated monitor.

Is this configuration good value?

Similar Ryzen 5 all-in-ones with 32 GB and 1 TB often sell for less, so compare other configurations before buying. The 32 GB and 1 TB parts are the main thing you are paying for here.