COVID-19 affects different people in different ways. Most infected people will develop mild to moderate illness and recover without hospitalization.

Most common symptoms:

fever

cough

tiredness

loss of taste or smell

Less common symptoms:

sore throat

headache

aches and pains

diarrhoea

a rash on skin, or discolouration of fingers or toes

red or irritated eyes

Serious symptoms:

difficulty breathing or shortness of breath

loss of speech or mobility, or confusion

chest pain

Seek immediate medical attention if you have serious symptoms. Always call before visiting your doctor or health facility.

People with mild symptoms who are otherwise healthy should manage their symptoms at home.

On average it takes 5–6 days from when someone is infected with the virus for symptoms to show, however it can take up to 14 days.

Reference
https://www.health.gov.au/