What size TV does this stand hold?

It is rated for screens up to 65 inches. Check your TV's width and stand footprint against the top surface before buying, since a 65-inch set with wide feet can overhang.

No. It is engineered wood, typically particleboard or MDF with a brown laminate finish. That keeps it lighter and less expensive than solid wood but makes it more vulnerable to moisture.

Does it have closed storage?

Yes. There is one cabinet with a door plus an open shelf. The cabinet hides remotes and small items; the open shelf fits a cable box, game console or router.

How hard is assembly?

Expect flat-pack assembly with cam locks and screws, roughly an hour or two for one person. Two people make attaching the top and cabinet door easier.

Can it hold a soundbar and a game console?

The top can take a soundbar, but keep it within the stand's width. The open shelf fits a slim console; a large AV receiver may not clear the shelf height.