Nikon F50 Camera? Info please?

Is this camera good?

How much megapixel is it?

how old is this camera?

How much film/ what film do i need?

The F50 has zero megapixels. Megapixels were not invented when that camera was current in the early 1990's.

It is a 35mm film camera - not a digital.

The Nikon F50 was introduced in 1994 (so less than 18 years old), as an entry level SLR camera, it's build quality is pretty plasticky, and it will only work with D-type AF lenses in the FX format (AF-S/AF-I lenses won't work), making it pretty useless. It takes 35mm film cannisters, and will automatically set to film speed using DX coding, it's resolution is dependent on the emulsion used, generally slow slide films and technical films such as Rollei ATP 1.1 will provide extreme resolutions which should match medium format levels.