I have a 4 year old side by side fridge and the frame between the freezer and the fridge is hot to touch (and freezer temp is 7 degrees). We had this problem before and vacuumed the dust from underneath the fridge. I saw on another post for a whirlpool fridge to clean condenser coils. The manual says that you only need to vacuum.
Open the back compressor cover and check if the condenser motor runs. If it’s not - replace it and the control board.
The condenser coils must be clean so the air flow over them will cool the compressor. Use the appliance brush and spray it with deluded household Simple green.