Enter with Quest VRChat
Install VRChat (Quest)
Launch Quest and press the Store button to access the store. Once you are in the store, press the "Search" button at the top.
Enter "VRChat" in the search field and do a search.
You will see "VRChat" in the search field.
When you select VRChat, you will see a screen like this.
Press "Free" to start the installation.
Once the installation is completed, press "Start" in the same place to start VRChat.
Then, you will see a screen like this. Press the "Oculus" button.
Once you have confirmed your birthday and terms, you can enter VRChat.
How to go to the store (same applies when you want to go to different stores)
Press Y button to open the menu. From the menu at hand, press “World”.
When you open the World menu, you will see "Virtual Market 6" column alongside "Hot" and other columns.
During the event period, all the VketMall Proto stores will be listed in this column.
They are lined up horizontally, and you can scroll through them to select one, but pressing "Expand↔" to expand them will make it easier to see.
From there, select the world you want to go.
When the world detail screen comes up, click the "Go" button to visit the VketMall Proto store. (If the network environment is poor, it may take a long time to load.)