Access the official website and choose the content you want to join from the list.

The detail page will be displayed.
Scroll down the page and select “Go to VRChat World Page.”

The VRChat page will appear.
Click “Invite Me” in the upper right corner, and an invitation will be
sent to your VRChat account.
Launch VRChat and check whether the invitation has been sent.

You have launched VRChat and logged in.
Open the menu and select the red “New” notification displayed at the bottom.

If it has not arrived, it may have timed out.
Please press “Invite Me” on the website again.

It will be displayed like the image, so select the check mark to enter the world.