Hello @Panshak_Polit welcome to the OpenEMR community. I hope you find useful answers to your questions.
OpenEMR uses many different kinds of forms to display and collect data. Many of them have the same appearance and interface controls, so look like they are the same type of form but are not.
Now, I am not a dev, but I do know that, as you mentioned, the summary page does show the data from many of the LBF forms that are used in an encounter. The problem is, the fee sheet is not in fact an LBF, it’s a php- coded page that APPEARS as if it might have been developed as a LBF.
If you want to display the fee sheet data on an encounter summary form you would need to customize the summary form to pull the information you want from where it lives in the database. Fortunately you might get some pointers from the code of the Ledger display which appears to have what you’re looking for:
It would take some work but remember the old computer saying, ‘do not ask if you can make a computer do something, ask if it is worth what it takes to do it.’