Apple Developer Enrollment not available in Portugal

Check here System Status - Apple Developer

If there's still a problem, check Apple's general support.

I presume your account is set to Portugal and you are in that country right now?

Refer to this page for Apple Support features ➔ Contact - Official Apple Support

Select from the presented options until you find a solution for your issue, or see if there is a chat or phone call contact method offered lower on the page under “Get more help” (you sometimes have to narrow down the options multiple times before this is shown). If you do not see your issue, keep experimenting with any series of selections until you reach one that offers a chat session or a telephone call and get the representative to redirect you.

This support article has various country telephone numbers for contacting Apple for support and service ➔ Contact Apple Support - Apple Support Scroll down to “Connect with live support”. If your country is not in the list, go to the “Other countries” entry at the end of the list. Not every country has telephone support, and phone numbers may only work when calling from the same country.

For chat, you can try using the Apple Support App —> https://apps.apple.com/app/apple-support/id1130498044

P.S. I asked for your image to be edited so you don't end up on some spam list.

You can ask Apple about this. https://developer.apple.com/contact/

What I find odd about the screenshot is the error:

"Apple Business Manager and Apple School Managerr"

Managerr?

Yeah, made me think the person who wrote that was from Omicron Persei 8 (Futurama fan here). ;-)

Good luck.