Firstly you need a bank account registered with eBay to receive any payments and yes this can take 5 working days, sometimes longer .
As a new seller your payments may be placed on hold for up to 30 days it's all explained here Payment Holds
Once you have an established selling record and meet the criteria payments are released in 24 hours.
With a seller rating of only 50% it was likely your payment will be placed on hold.