First..your spelling of "sales" is wrong.
Secondly...in the first half of your sentence, you state 'record sales...but then employ "is" which is for a singular noun. As you have written the word "sales" (plural) you must write "are".
So:
"This year's record sales are expected to break the sales quota."
"This year's record slaes is expected to break the sales quota."
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sales are...not sales is