Thanks for reaching out to Jotform Support. Do note that the created forms can't go automatically to the Apps unless you add them to your app via the Form element within your App. Let me show you how
In Apps Builder, and click on the Add Form Element menu on the left side of the page.
Under the Basic tab, add the Form element to your form.
Select the created Form/s and click on AddForms.
Also, you can use the Button element from the basic elements to direct the users to your form:
In Apps Builder, and click on the Add Form Element menu on the left side of the page.
Under the Basic tab, add the Button element to your form
Click on the Gearicon to open the ButtonProperties.
In the menu on the right side of the page, click the OpenForm in the ButtonActions and select your form.
Give it a try and let us know if you need any help.