Yes it's normal for a toddler to poop 4 times a day.
All toddlers are different when it comes to pooping and the amount of times the toddler poops per day will depend on what they eat and how much they eat.
The more fiber the toddler eats the more often the toddler will need to poop.
Some toddlers may only poop once per day and other toddlers may poop 2 to 4 times per day and it's all normal.
I remember when my oldest son was 2 years old and still in diapers full time that he would poop 5 times per day one month and then the next month he would only poop once per day.
As long as your toddler is pooping I would not worry as it means they are not constipated but if the toddler goes a week without pooping then they might be constipated.