Is this an autograph card?

No. It is a Scouts Top 100 Refractor insert, not a signed card. Signed De La Cruz rookies are separate cards and carry much higher demand.

Is this his base rookie card?

No. It is an insert from 2023 Bowman Chrome. His base rookie cards come from other 2023 releases, and this insert sits alongside them in a collection.

What does Refractor mean here?

Refractor refers to the reflective chromium finish on the card. It is the standard refractor version of the insert, not a numbered colored parallel.

Grading is worth considering only if the card looks sharp, with clean corners and centered borders. For an unnumbered insert, grading costs can outweigh the added value.

How should I store it?

Keep it in a penny sleeve inside a rigid top loader, away from heat and direct sunlight. Chromium cards can show surface scratches, so avoid loose storage.