Answer 1

Sololearn in no way plays any role in your interview process. It is just an application which is used by beginners to learn and the other half on sololearn help them learn. That is all sololearn is about.

Do not show these certificates and badges to your interviewer. All you can say is you are a part of this community and you have learnt good things from here.

Answer 2

Sololearn badges and certificates can only prove that you know the basics. What you really need to succeed in an interview is a good CV and a portfolio with several cool websites/apps you designed so I suggest to start working on these ASAP.

Answer 3

Just a bit of anecdata. A recruiter noticed my python badge on my linkedin account and assumed I was familiar with the language.

The badge is a signal interpreted by whoever is receiving it. Take it as you will. :)