Refrigerator is worming on the outside

It is normal for a refrigerator to be warm on the sides and top. The refrigerator cools by removing the warm air inside it. But if the outside is hot to touch, I’d suggest cleaning the condenser coils underneath the refrigerator. Some are accessible from the front by removing the bottom toe plate and vacuuming the dust from the coils. Some are behind the unit. Unplug the refrigerator and slide it away from the wall so you can remove the rear access panel and vacuum out the dust. This should be done at least once a year. This will help your refrigerator in every way and prolong its life.