If you've already handed in your notice and you have accumulated holiday, depending on how contractually it's calculated (1.5 days earned per month for example), then you should have already discussed what to do with earned holiday.
Companies can pay you what's owed if they really need you to work, or you can take holiday during a notice period.
A notice period is just that - a period of time served in which the company know you're leaving. You can during that period do the following, turn up, go sick or take holiday.