Is the ZV-E10 II worth it over the original ZV-E10?

Yes if you want the bigger battery, improved autofocus and 4K 60p. The original remains fine for 4K 30p and costs less, but the second generation is the better long-term video body.

Does it come with a lens?

This listing is body only, so no lens is included. You need a Sony E-mount lens; the compact 16-50mm power zoom is the usual vlogging pairing.

Can it shoot 4K at 60fps?

Yes, up to 4K 60p, though some high-frame-rate modes crop the sensor. Check the recording mode before relying on a wide framing.

Is there an electronic viewfinder?

No. Framing is done on the 3-inch flip-out touchscreen, which is fine indoors but harder to see in direct sun.

How does it compare with the Canon EOS R50?

The Sony has the larger E-mount lens ecosystem and stronger video tools; the Canon is smaller and has a viewfinder. Pick the Sony for lenses and video, the Canon for stills with an EVF.

Does it have image stabilization?

There is no in-body stabilization. It uses lens optical stabilization when available plus digital stabilization for video, which crops the frame slightly.