If V is ranked fifth, which of these must be true?

According to question,
V always scored more than P.
V > P
P always scored more than Q.
P > Q
∴ V > P > Q
If R Score highest, we have
R >.......> T
If S Score highest, we have
S >.......> Q or S >.......> U
If V ranks fifth, then P and Q coming after V will occupy sixth and seventh places respectively i.e., Q ranks the least. so, S Will score the highest.