what relevant skills do I need to apply for a job at star bucks?

To apply you need to be able to read and fill out an application. Also the ability to spell the company correctly. (Starbucks is one word.)

Other than that here is a link to what you need to know to get the job.

wfa.kronostm.com/index.jsp?locale=en_US&applicationName=

I have a friend who works at one. They will teach you what you need to know about the drinks. I even thought about working there.

Hi
Jimmy! Some customer service and coffee-making skills might help, but you will
definitely not need a big deal of qualifications to make it through. Simply
send in your CV and other details and they should get back to you. However, do
note that those who have experience in the field will have an advantage over
you. All the best!

I don't know. However, they do seek out employees that actually do not have a certain skill, oddly enough. They'll hire people who can't even.

If you feel comfortable working wih very hot water, I think they will teach you everything else you need to know.