The register
The register lists Billion Dollar Boy Limited in London, London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Billion Dollar Boy Limited is the registered name (Companies House number 08031315), a private limited company on the register since 2012. The registered office is at Bedford House 1st Floor, 21a John Street, London, WC1N 2BF, WC1N 2BF. By its SIC codes the business is in it, software and media.
A licence says an organisation may sponsor; it does not say it is hiring today. The way to find out is the same as for any employer: the careers page, the job boards, and a direct approach with a UK-style CV that says early that sponsorship would be needed.