Problem:
Limit the number of repeating field instance displayed on Toolset post edit form

Solution:
The thing is that there is no such feature available to control repeating field display with the post form.

The workaround to achieve this is you will require to add custom Javascript/jQuery code to your form's JS editor.

You can find the proposed solution in this case with the following reply:
=> https://toolset.com/forums/topic/display-limit-number-of-in-repeating-field-on-view/#post-1769011

Relevant Documentation: