When looking for applications for the headsets, there are many places to look. For starters, for the Meta Quest line of headsets, which is what we at YCCC have, a good place to look for applications is the Meta Store: https://www.meta.com/en-gb/experiences/
There are also plenty of articles written about applications one must get for their VR headset. Here is a list of those articles:
Top 500 VR Education Applications: https://bodyswaps.co/resources/blog/500-best-vr-apps-education
25 Free VR Educations Applications: https://arvredtech.com/blogs/news/25-free-virtual-reality-education-apps-engage-learn-and-explore