Critically and with audience reviews the movie has done really well. Greatly exceeded expectations overall, I would say.
Financially, so far the movie has mildly exceeded expectations/projections per leaks in trade magazines. The jury is still out, of course, as for how it does in total, but the reviews/quality of the movie plus the moderately good early performance are positive signs.
There are a lot of unknown-to-us factors weighing in to whether it really is profitable, like EOne/Hasbro's taking on part of the production costs, and the merchandizing/marketing benefits for Hasbro. And to whether it's considered successful enough to merit more movies. But we can tell it's a more complicated picture than just "did it make back more than the rule-of-thumb 2.5 times production costs" in part because we know the movie itself is meant to push greater brand awareness for and sales of D&D and related STUFF, and upcoming other media properties like TV shows.
"Hit" is probably exaggerating, at this point, but that'll be more dependent on the total box office receipts. So far it's a success in the reviews, a mild success at the box office, and yet to be seen about the other stuff. It seems to have dodged "flop" status, at least.