Yeah I'd get rid but the fork seems quite good, this bike was dug out of a skip, it's 20" Specialized Hotrock
Aluminum frame, no real rust anywhere that matters, rear derailleur in good nick needs a clean.
Defo needs saddle, chain, new pedals, bar, bar grips, cables, tyres.
Might need 6 speed cassette, but they probably just need a good clean, BB seems sound