check out all weapons on bf2s.com, they have a detailed

list of all weapons' data.
For your question: full health of a soldier is 100,
damage for SVD/Type95 is 45, 3 shots are need for non-headshots. Headshot is one shot.
damage for M95, L96A1, M24 is 95, 2 shots.
damage for AK47 is 38 or so (check it I do not remember), for armored class, 4 shots are needed (AT, Assault, Support are armored, rest are not). For others 3 shots on body.
AK101 is similar but more accurate.
The other assault rifles are less powerful, usually 5 shots for armored, 4 for non-armor.