The hostdb -v output gives you the host list sorted according to score.
So the last one you see has the best score.
The overall score is shown in the column following the announced address. and before the column showing the price.
In the column named "Pubkey" you see the hashes of the nodes (beginning with the "ed25519:").
If you want to read a hosts settings and score breakdown you should copy the whole hash, then
siac hostdb view <pubkey of a particular host>
gives you the settings of that.
siac hostdb view ed25519:181be570a6b1b80e07775f0cb26ae92d654c74daa8d11e4a043b8289409ec2b9