1. Musicnotes.com: This website offers a wide variety of sheet music, including arrangements for cello. You can search for "Someone Like You" and select the arrangement that best suits your skill level.
2. SheetMusicPlus: Similar to Musicnotes, SheetMusicPlus offers a large selection of sheet music, including arrangements for cello. You can search for "Someone Like You" and choose from a variety of arrangements, including those for solo cello and cello and piano.
3. CelloBelloMusic.com: This website specializes in sheet music for cello, and it offers a variety of arrangements of "Someone Like You". You can find arrangements for solo cello, cello and piano, and cello and guitar.
4. MusikaNeo: This website provides a wide range of sheet music, including arrangements for cello. You can search for "Someone Like You" and choose from a variety of arrangements, including those for solo cello, cello and piano, and cello and guitar.
5. Local Music Stores: You may also be able to find sheet music for "Someone Like You" arranged for cello at your local music store. These stores typically carry a variety of sheet music, including arrangements for different instruments.