Step 1: Select the table visual where your data is located in the Report Pane.
Step 2: In the Visualizations Pane, right click on the date Value in the Values area (not Filters area) and select Date instead of Date Hierarchy.
Step 3: In the Visualization Pane, right click on the date Value (same place) and instead of Don't Summarize select Count.
I would recommend this Power BI course online by Intellipaat.