Использование:
df = pd.DataFrame({'title':['p1','p2','p3'],
'score':[1,0.1,2]})
print (df)
title score
0 p1 1.0
1 p2 0.1
2 p3 2.0
df1 = pd.DataFrame([df.score.values], columns=df.title.values)
Альтернатива:
df1 = df.set_index('title')['score'].to_frame(0).T.rename_axis(None, 1)
print (df1)
p1 p2 p3
0 1.0 0.1 2.0
df.to_csv(file, index=False)