Hello,
using the search function of this forum you often get help, like with token "“limit submissions for form”.
Workaround, manually, on server level with project administration:
After the number you need, you can close the user access or submission right or archive the project to block further submissions.
For example, see: https://community.kobotoolbox.org/t/how-to-stop-data-collection-by-link/12534
or https://community.kobotoolbox.org/t/how-do-i-configure-my-project-so-that-enumerators-are-not-able-to-submit-further-data-once-the-project-data-collection-is-complete/18023
or https://community.kobotoolbox.org/t/how-do-i-un-deploy-my-survey/2830/4
