Where can I buy a 2 year Treasury yield?

Excuse me, could you possibly assist me in finding out where I can purchase a 2 year Treasury yield? I'm new to this field and I'm having trouble navigating the options available. Is there a specific platform or marketplace that's commonly used for such transactions? Additionally, would you happen to know if there are any requirements or qualifications I need to meet in order to make such a purchase? I appreciate your time and any guidance you can offer.