Yes, CONFERENCE is a Scrabble word!

Letter values in Scrabble US: C 3, O 1, N 1, F 4, E 1, R 1, E 1, N 1, C 3, E 1.

Is it a valid word?

CONFERENCE is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

a prearranged meeting for consultation or exchange of information or discussion (especially one with a formal agenda)
an association of sports teams that organizes matches for its members
a discussion among participants who have an agreed (serious) topic

Also: group discussion.