Even if you don't have a VR device, you can set up a booth in the venue world and exhibit by submitting your booth data.
You can also participate in the venue, VRChat, in "desktop mode" without VR equipment.
You will need to use "Unity" and "VRCSDK" to create the data to be submitted.
The submission tool "VketTools", which will be distributed on around October, will allow you to install the official Prefabs useful for your submission.
On October 26, the "submission period" will begin. You can use VketTools to submit your data, and check how it looks in the regularly updated "Preview World".
Please refer to Submission Rules for details of submission.