Is “Whereto” a Scrabble word?
Yes
WHERETO
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Whereto
adverb
1.(interrogative) To what; to which place, whither?
2.(interrogative) To what end; wherefore?
3.(relative) To which.
Synonyms: whereunto, whither