Yelling and screaming in a dungeon is a good way to attract the unwanted attention of monsters.

Yelling and screaming while role playing is a good way to attract the attention of your parents or your non role playing spouse, or your neighbors if the windows are open in nice weather.

Yelling and screaming can be a sign of imminent danger for the characters in the dungeon, but is often a sign of a good time in the course of role playing.

Sometimes there is roaring with laughter, yelling at a poor roll, grieving at the loss of a favorite character or NPC.

If it involves a disagreement in real life among players or DM, then the DM needs to step in and straighten it out.

The whole point of RPGs is to have fun while playing your preferred version of make-believe with rules.

May all your yelling be part of role playing and a sign of a good time!