If you want to purshase VRP you have to go here: http://www.raceroomstore.com/shop_en/vrp It's no more possible via Steam since few month
Check the FAQ´s for all information about how the store works: https://forum.sector3studios.com/in...ence-faq-and-game-features-w-i-p.72/#post-218
Separate login but you can purchase as guest. You just need to make sure you type your email correctly because the redeem code to unlock the vRP will be sent by email.