I got my first fish and tank and I have some questions

What kind of filter is it? If it's a sponge filter with an air pump, then indeed you won't see a stream, but lots of bubbles.
However, such filter is not suited for the kind of fish you have. They have limited filtering capacity.
Do you have any information about the type of filter/tank you bought?

Also, perhaps not an answer to your question, but as far as I can tell you've made a few other beginners mistakes:

• A tank needs to go through a cycling process BEFORE you can add fish to it. This can take at least 4 weeks. If you don't do that, you risk that all your fish will die. Have a look at this answer for more information: https://pets.stackexchange.com/a/323/7038

• A Black moor is a type of goldfish. For their well being a single goldfish needs at least 60 litres of water (16 gallon). Since you mention that it's basically 'a large bowl', I would assume that your tank is in fact not suitable for any kind of fish, except perhaps a single Betta.

• Pet stores usually only care about selling things & profit, or they simply don't have decent knowledge about fishkeeping. The fact that they 'allowed' you to buy fish & tank on the same day is already an indication of this. If you want advice, you're better of going to a specialized fish shop for information, or look it up on the internet beforehand (or ask questions here).

• Since you are already concerned that your fish is not ok, I would try to return them to the store where you bought them. And then do some research on starting & running aquariums and the type of fish you want to keep. It's often thought that goldfishes are easy to keep, and perhaps it also looks like that. But in fact, if you keep them in small fishbowls they usually don't live that long. When kept in a good & healthy environment, a goldfish could live for 20 years or more...