It takes between 8 minutes to 15 minutes to bake a pizza depending on the size of the pizza you're baking.
For smaller pizzas it takes around 8 minutes to bake the smaller pizza.
For larger sized pizzas it takes around 15 minutes to bake the larger sized pizzas.
Frozen pizzas will take a bit longer to bake than thawed out pizzas so you must factor that into the time it takes to bake your pizza.
No matter the pizza though most pizzas take at least 15 minutes to bake if they are the larger ones.
When baking a pizza in the oven put the pizza directly on the oven rack and not in a baking sheet or pan so that the pizza cooks more evenly.