Please don't start antibiotics on your own
For now continue with Paracetamol, for his mentioned weight and age(9 years, 32kg) 500mg tablet would be better than syrup. As you'll have to give almost 10ml of Syrup(250mg/5ml)
Next Steps
if fever persists, then day after tomorrow you can get blood tests done after physical consultation - it's important to know cause of fever - usually it'll be viral which won't need antibiotics
Health Tips
Paracetamol can be given 6th hourly
during fever spikes, do tepid sponging along with Paracetamol
Give plenty of oral fluids