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Please let us know the Form url, in which you are working. I tried to check your recent form. But seems it has been deleted.
If you want to set the maximum or minimum value, then I would suggest you to use Number field on your form. And you can set Maximum or minimum value of that, according to the below screenshot:
You can also set conditional logic on your form fields, according to the below guide:
If you have any query or need something else, feel free to revert back, with Form URL, and we will be glad to assist you further.