How many specialists are working in your team on this project?

This question relates to the organizational aspects of the project and depends on the specific team and company.

The number of specialists in the team can vary from a few people (for example, 3-5) in small projects to dozens or hundreds in large companies.

If you are answering in an interview, it is better to honestly indicate the actual number of team members and their roles, for example: "Our team working on the project consists of 6 people: 3 developers, 1 tester, 1 designer, and 1 project manager."