I got 15 guppies about a month ago, 2 of them died sadly, and the others are staying on the surface of the water when they died. They seem to be alert of what’s around them. They are also not eating. I don’t know what’s up, can someone help me?

Hard to say. Could be lots of scenarios causing the problem. Are you using tap water? Probably one of the most common problems with any aquarium. You may want to get a water testing kit and check your water parameters if you haven't already.

AK Coral and Fish can help diagnose your water problems if you bring in a sample. They will likely recommend you do a significant water change.

Water has to much amino in it change it every 2 weeks and then have it checked to see what is going on with the water