Are you referring to getting accepted into the beta or completing all the various forms for your company? I've been accepted to the beta, and the landing page says:

"After you submit the application, we will send you the documents to review and sign within a day or two. Your company and bank account will generally be set up within a week of submitting the signed documents."

I have yet to submit my forms, but I was under the impression the process would be relatively quick.