Begin at the source. Kaczmarek has his own website, Jan-ap-kaczmarek.com, where he offers his pianist fans links to digital copies of sheet music from the film. Music selections include the "Finding Neverland" theme for solo piano, as well as the beloved track "The Park."
Consult other online sheet music purveyors. Sheetmusicdirect.com, Pianofiles.com, and Musicnotes.com are all websites that may have "Finding Neverland" sheet music. Some of these sites require registration, and others require you to download a plug-in or other software. Most sites charge a nominal fee for the sheet music itself.
Consult free sheet music sites. Free-scores.com, Sheetmusicpublicdomain.com, and Sheetzbox.com all offer free downloads of "Finding Neverland" sheet music for the piano. Most of these sites request a donation but do not require payment.