1999 Renault Clio possible remedy

Smells problem
1999 Renault Clio

my car has completely stopped, but before it did it smelt of burning, the wipers did not turn off, the lights wont go on, the central locking wont work, before this it did have a habit of just stopping and being really hard to start.
can anyone adviseand let me know if its worth repairing and the best way to do so and any ideas on how much it might cost,
many thanks