Many translated ISOs break the scoreboard text (e.g., "0-0" looks like "%-%"). A better fix is to download a specific overlay.cpk mod from the PES Modding Forum. This restores the font mapping for English characters.
Note: Official English versions of PES 2014 PSP exist (e.g., US or UK releases), but many pre-patched ISOs online are European multi-language versions that default to a non-English language. pes 2014 psp english language patch better