A/C not working on a Honda?

95 Honda Civic EX: I apologize in advance I may not know the terminology for most parts. My A/C is not working... It only blows warm air nothing close to cool air. I bought a Fre-on bottle for refill, while connecting, the gauge on the bottle goes up and reads RED = “something wrong with system”... So I try to drain everything, unfortunately, there wasn’t anything to drain. I again plug up the bottle and same thing occurs. Although just realize there is a noise coming from the passenger glovebox. Sounds like a “ SSSSssssssss “ [air leak], any suggestions...