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Kohls is one of the rare few that use VantageScore instead of FICO.
There are a few FICO scores that go above 850 including some industry specific versions that go to 900 and both FICO Nexgen Scores go past 850.
HOWEVER, a range of 501 to 990 will tell you that the score quoted by Kohl's is one of the Vantage Score versions, which is not a FICO based score at all.
ETA: outtyped by IIlecs.........