。
I don't like TV very much.
Literal
I [topic-は] TV [topic-は] not-much like is-not.
Double は! The first marks 僕 as the overall topic; the second contrasts テレビ against implicit alternatives (other forms of entertainment). This 'contrastive は' is characteristic — it implies 'TV specifically, as opposed to other things.' あまり paired with a negative means 'not very/much.'