You can use the htmlembed URL to display just a range from a Google Sheet - here's how to structure the URL

https://docs.google.com/spreadsheets/d/SpreadsheedID/htmlembed?single=true&gid=SheetID&range=D15:E15&widget=false&chrome=false&headers=false

• SpreadsheedID should be the long letters, numbers and characters you get in the normal URL

• htmlembed is for sheets you have not published: use pubhtml instead if you have chosen to publish the sheet (if you want the public to see it it's the best way

• single never been sure what it does, but we think it helps with only showing a single sheet instead of multiple sheets

• SheetID is the sheet number you get in the normal URL after the ?gid= (this is not the sheet name you have specified but the automatic number that Google Sheets provides)

• range lets you specify the range of cells you want to display

• widget lets you choose whether to display the sheet tabs at the bottom

• chrome lets you choose whether to display the spreadsheet title at the top

• headers  lets you choose whether to display the column letters and row numbers

Example Live /htmlembed URL

https://docs.google.com/spreadsheets/u/1/d/1cM4zPGomUinJyWru_ULdW-T_CFEb9xsvTdYNI2Gjdqw/htmlembed?single=true&gid=739128608&range=A3:B3&widget=false&chrome=false&headers=false