It's now under Settings : Bake Data / Free Data.

Blender 2.82 use a brand new simulation engine (Mantaflow) for fluids and smoke, so any tutorial prior to this version is outdated.

for the given screenshot cache>Type(change to final)>bake option appears below

It's now under Settings : Bake Data / Free Data.

Blender 2.82 use a brand new simulation engine (Mantaflow) for fluids and smoke, so any tutorial prior to this version is outdated.

For the given screenshot Cache > Type change to Final then the Bake option appears below.

It's now under Settings : Bake Data / Free Data.

Blender 2.82 use a brand new simulation engine (Mantaflow) for fluids and smoke, so any tutorial prior to this version is outdated.

It's now under Settings : Bake Data / Free Data.

Blender 2.82 use a brand new simulation engine (Mantaflow) for fluids and smoke, so any tutorial prior to this version is outdated.

for the given screenshot cache>Type(change to final)>bake option appears below