Getting another bachelor's degree in Canada when I already have a Bachelor's

[iopyud]

Hi,

Say, I have a Bachelor's on International Studies, what if I go to Canada to get a Bachelor of Arts : General Study/Social Science/or anything that's related to what I have?

What if I got a Bachelor's Degree that is NOT related to what I did?

Will I get a Study Mismatch?

Is it better to get a Master's Degree?

I asked because I feel that my current qualification is too narrow.

Thanks.