Level - Points
A = 4
B = 3
C = 2
D = 1
X = 0
From least to most:

Suhyun (AKMU)
Sing = A
Dance = X
Rap = X
Write = X
(4 pts)

Sing = A
Dance = D
Rap = X
Write = X
(5 pts)

Sing = B
Dance = A
Rap = X
Write = X
(7 pts)

Sing = C
Dance = A
Rap = D
Write = X
(7 pts)

Sing = C
Dance = D
Rap = A
Write = B
(10 pts)

Sing = C
Dance = C
Rap = A
Write = A
(12 pts)

Yamy
Sing = C
Dance = A
Rap = A
Write = B
(13 pts)