In the PDF24 Reader, which is part of the PDF24 Creator for Windows: open the PDF, press Ctrl+F, type the amount or the payee and press Enter. With Next and Previous you jump between the results.
Online without installation: https://tools.pdf24.org/en/search-pdf. Add the PDF, enter the search term and click Search. Every hit is shown with its page and the text around it.
Please type the amount exactly as it is written in the statement (for example with the same decimal separator). If nothing is found at all, the statement is probably a scan without text. Then run it through text recognition first, for example with https://tools.pdf24.org/en/ocr-pdf, and search the result.