It depends, was it a TMA or the EMA?
EMAs do take a long time. My last EMA was handed in on the 7th Sept but I won't get the result until 24th Oct.
If it was a TMA it should take 10 days but sometimes tutors are ill, etc. so it can take longer every now and again.
Also, if you are getting concerned it's perfectly OK to email your tutor and ask what's going on - even if the module has ended, just email your tutor from that module.