Priority Application
If you need a speedy reply, we offer a Priority Application service for your individual record application. If you choose the Priority service,
Guinness World Records will respond to you within five working days (as opposed to the usual 12 weeks).
The Priority Application service for existing titles costs £500 / $800 US / €630 (plus VAT where applicable), while the cost for new titles is £650 / $1,000 US / €820.
https://www.guinnessworldrecords.com/records/the-application-process/how-long-does-it-take