Hi 
Today I was trying to build my app for iOS but I can’t press the build button, I have the XCode installed with the new version. Can someone help me?
There’s a screenshot attached.
Thank you.
You haven’t put in the code signing identity. Apple has this insanely complex security system designed to protect its revenue stream.
But it doesn’t show any option for me on this menu bar. Do you know why ?
You probably have not signed into your developer account in xcode. If you already have certificates and provisioning profiles you should get some options in the code signing identity drop down list
Yes 
I was searching online about those certificates and as I see it needs to pay the developer account to have it, right? Thought I could try my app without paying the apple developer account.
You have to pay Apple to get the developer account before you can build your app.
Rob
You haven’t put in the code signing identity. Apple has this insanely complex security system designed to protect its revenue stream.
But it doesn’t show any option for me on this menu bar. Do you know why ?
You probably have not signed into your developer account in xcode. If you already have certificates and provisioning profiles you should get some options in the code signing identity drop down list
Yes I was searching online about those certificates and as I see it needs to pay the developer account to have it, right? Thought I could try my app without paying the apple developer account.
You have to pay Apple to get the developer account before you can build your app.
Rob