"Bio" is short for "biography," so you can use any of these synonyms depending on the context:

General Synonyms:

* Profile

* Summary

* About Me

* Background

* Vita (short for "curriculum vitae")

* Resume (for professional contexts)

* Personal Statement

More Specific Synonyms:

* Narrative (if it's a story about someone's life)

* History (if it focuses on past events)

* Sketch (if it's a brief overview)

* Account (if it's a detailed description)

* Description (if it's a general overview)

The best synonym will depend on the specific context and the tone you want to convey.