Google Docs document filler

Good day. It is necessary to create a document filler on Google Docs. The principle of operation is identical to UkrBlank version 7.93, only all data in Google Docs and Google Sheets. There are standard document templates, for example https://privatbank.ua/poleznyje-dokumenty 

   - contract,
   - invoice,
   - waybill + (receipt, waybill (TTN)),
   - new tax invoice,
   - act of completed works,
   - return invoice,
   - new tax adjustment,
   - income cash order,
   - expense cash order,
   - new payment instruction (payment order) + (cash transfer application, notification),
   - power of attorney.

and so on. 

They have fields that are standardly entered constantly. These fields (data) are already entered in Google Sheets. Based on this data, a simple document autofiller needs to be created, which will have certain document templates (Google Docs, Docx, Doc)   and fill them with data from Google Sheets. 

The document templates will be in a separate folder on Google Drive. Their layout for the autofiller should be simple. Automatic numbering of template files #1, #2, etc. and date setting will occur. The details of the individual entrepreneur or company are taken from Google Sheets. After filling, the Google Docs document is saved in a folder on Google Drive, and an identical pdf file is automatically created in the same folder.

Document templates for reference - https://privatbank.ua/poleznyje-dokumenty

There will be several additional modifications after completing this task.