"Should I not use the field maps web to create the form and use Map Viewer beta instead?"
You can use either. In later releases there are differences between Form Authoring in Field Maps compared to Map Viewer; but in your Enterprise release, they are very similar.
"If map viewer beta won't recognize the relates with identify it is possible that the form might be programmed differently to recognize relates? "
Unfortunately, no. Form Authoring doesn't support this yet; it's in our backlog and on the roadmap to support later this or early in 2023. I wouldn't recommend programming the form to recognize relates; while supported in the spec; authoring and maintaining it might be a bit tricky.
Tough to comment on the entire workflow you're trying to accomplish, but, if you're looking for a web form for workers in the office, you could consider using Survey123 as it has more form functionality that is not yet in Field Maps.
Craig