if any future peoples also having the same issue here is how i did it
#track_set_key_value(track_id,key,value)
#track_find_key(track_id,time)
#finds_track_idx
var animation=$AnimationPlayer.get_animation("walk_right")
var x=animation.find_track("right_walk_sprite_sheet:position")
print(x)
#finds_key
var animation=$AnimationPlayer.get_animation("walk_right")
var x=animation.track_find_key(1,1.4)
print(x)