It depends on the dates you are looking for.
Newspaper.com has a few from Halifax newspapers for Nova Scotia before 1930 and after 2005.
Obituaries from 1992 to 1998 from the Halifax Chronicle Herald Newspapers for Nova Scotia can be found on Dwayne Meisner website
https://www.dwaynemeisner.com/index.php, as well as an index of obituaries from 1960 to 1991.
Some obituaries can be found on the website Nova Scotia Obituaries
http://www.rjoudrey.ca/nsobits/index.php.
New Brunswick Telegraph Journal has an archive of New Brunswick newspaper with an subscription. This includes Saint John and Moncton newspapers plus a few others.
The Group NsCumber
https://groups.io/g/nscumber has been posting Cumberland County, Nova Scotia obituaries for the last 20 years or so, plus other ones that members have posted. They have an archive of all messages.