Hi,
when you install Business central client, you can manually install Excel add-in too. Otherwise you should go to control panel > uninstal program > business central > change > add or remove components > enable excel add in.

After that, restart your machine (just to be sure), open Excel and should find the section 'Dynamcs Nav'.

If you don't see the section, try to import the .vsto manually. Open Excel > Options > Add in components > Manage > chose COM > GO... > there you should enable/import the .vsto from BC installation folde (see screen below)

Now if open a list in business central, for example Customer List, Print and send > microsoft excel > it will open Excel with linked list.