How many forms can be added to a single project?

Hi community!
Does anyone know how many add forms they allow per survey? I have one principal survey with 4 add forms inclued. I want to add three more.
Thank you!

From the User Guide at Linking Forms | Epicollect5 Data Collection User Guide

The maximum number of forms you can link is 5. If you feel the need of having more forms, have a look at branches (i.e. subforms).