a = {'home': {'name': 'Team1', 'score': 0}, 'away': {'name': 'Team2',
    'score': 0}}
b = {'home': {'name': 'Team1', 'score': 2}, 'away': {'name': 'Team2',
    'score': 0}}
diffs = []
for i in a:
    for j in a[i]:
        if a[i][j] != b[i][j]:
            diffs += [i, j]
print(diffs)
Diff multidimensional dictionaries in python