How can I create a Third Dimension In QLik.I have 2 Dimension Weeek and Status as dimension.However I need to add I more dimension of days on Xaxis.

Per my understanding, the bar chart object native to Qlik Sense is limited to either 1 dimension & 1 measure OR 1 dimension & Multiple measures OR 2 dimensions & 1 measure.  However there could be a work around or extension out there that I'm not aware of.

Chart type limitations

if you are ok with having week or day on the x axis you could use a drill down dimension which will show the weeks til someone selects a week and then would show the days of that week.