how long does it take to get a court hearing date once it is requested?

It depends where you live and when you requested your hearing.  Go to http://www.ssa.gov/appeals/DataSets/01_NetStat_Report.html and type in your State name, or, if you know it, the city in which your hearing will be.  If you have received a letter from the Office of Disability Adjudication and Review, the City and State on that letter should apply.