Is vermi-compost bio-fertilizer

Yes, vermi-compost is bio-fertilizer.

Specifically, a bio-fertilizer adds or augments nutrients in soil through the input of organic materials. Compost exists through the breakdown of compostable materials -- which are carbon- and nitrogen-rich -- into dark, fresh, nutrient-rich organic matter. Vermi-compost represents the breakdown which happens through the use of special worms.