[yvoms]

its just warnings, dont worry about them.
Indentation means your opening and closing at the wrong place, make sure the script is tabbed correctly.
Unreachable code means you closed your code before it actually ended.
Number of arguments means you didn't complete a line of code.

Like..
Setplayerhealth(playerid);

That doesnt have all the arguments.

It has to be.
SetPlayerHealth(playerid, Value);