With this certification, can you get some fills?
The answer is no.
There are countries where anyone can dive at will, no certifications required, but as soon as you ask for a fill at a commercial diveshop, they have at least some duty of care. Legislations do vary, but it is best, advisable, and very wise indeed to get properly certified.
This course alone does not make you a safe diver.
Based on this course, you might deduct some important rules of diving, but even if you did, there are other aspects to diving: Gear, the pre-dive check, weighting, buoyancy, finning, breathing, trim, gas sharing, recovering a regulator, emptying a diving mask, mental preparedness, best practises, and so on, that cannot be read from a book. Diving indeed is a sport. It requires both skill and a suitable state of mind and practical knowledge beyond science. Plus, you want someone experienced to look after you so you do not kill yourself during those very first dives.