My sales figures are nor updating, QB is showing a lesser amount than my actual sales

Hello, userluyanda_mothiba. 

Thank you for reaching out to the Community. QuickBooks only displays the Invoices and Sales Receipts to calculate the sales amount on the Dashboard. This will not include journal entries posted to your sales accounts and the calculated sales taxes. 

Let's double-check the amount shown on your sales graph. You can click the drop-down arrow in the upper right-hand corner of the graph to change the period. You can also open the Sales by Customer Summary report to review the details of your sales graph. 

Here's how: 

1. Click Reports on the left panel.
2. Type Sales by Customer Summary in the search box.
3. Filter the Report period.
4. Press the Run Report button. 

Please let me know if you have any other questions about your sales. It'll always be my pleasure to help. Stay safe!