Sure @mmisiur
There are two lists (e.g. A and B), each contains n number of tuples. for each to corresponding tuples  in A and B, I wanna compute score:
a1 = []
b1 = []
score = []
for a1, b1 in zip(A, B):
  'score.append(torch.bmm(a1,b1))`

However, I faced an error as a1 and a2 are tuples, not tensors.
By adding this two lines before for loop, I still not able to reach my problem goal:
A = [item for sublist in A for item in sublist]
B = [item  for sublist in B for item in sublist]