If you generate the excel of GSTR1 but in that not showing the HSN Summary, B2B or B2C details, then you can check below steps:
Step 1: Make sure you have not selected Yes on Skip HSN Summary option when generating the GSTR1 excel.
Step 2: Make sure you have selected the correct period for generating the GSTR1 excel.
Step 3: Make sure you have categorized your parties correctly by their type of dealer, either registered or unregistered, as this will determine whether the data will appear in the B2B or B2C section.