I live in the US. I am considering opening a bank account in Canada.
Do I need to live in Canada to have a bank account in Canada?
If so, am I required to file tax in Canada?
It is not necessary to live in Canada to open a bank account. However you will have to establish your identity in order to do so.
Having a Canadian bank account does not make you liable for Canadian tax. That would require either being resident in Canada or having Canadian income.