Help. My shoulder has been sore for 4 days.?

Normal. I box at a gym and with a vr boxing game. Vr boxing always leaves me sore because when you're actually boxing, your arm comes to stop upon impact whereas in vr boxing your arm tends to comes to stop when it can't be hurled forward anymore, putting stress on the shoulder joint.

The best advice I have is do stretches, avoid sleeping on your side/shoulder and ice it if the soreness or pain level is higher than 3 on scale of 1-5.

Perhaps it's time to stop playing video games

have you try cold pack? i can suggest to you to get massage, for muscle relaxation