Hello AmitKE,
Welcome to the Community page,
You could do it as one sales receipt for the day if that works for you.
When you have logged into your account click on the main cogwheel top right> then click on import data under tools>select sales reciept>download an example> this will show you how the CSV file needs to look like when importing it in. once you have done the document and saved as CSV file then click on browse find the document and follow the steps and it will import it in for you.
If have any Q's please let us know.