Formula to find the address of particular value (row & column position unknown)

Greetings,

I have an online PDF file whose contents are exported to an excel worksheet. For any export, the placement of the labels from the PDF file are not always in the same row / column in the excel file.

So, if I am searching for a particular label in the excel file, I know neither its row position or column position. Is there any excel formula that can find the address of particular value in the sheet in such a scenario?

I am currently using a UDF but I noticed that it slows down the workbook.

Any help would be appreciated
Asha