How do I can add SpriteFont+, Call JS and LiteTween?

Hello. I am new to Construct 3.

I have a project made with Construct 2 and it uses SpriteFont +, Call JS and LiteTween plugins.

How do I add them?

Also, how can I remove the "Powered by Construct" screen(I'm using individual license)?

Do you have access to Construct 2? You'll need to remove Call JS plugin from the project before importing to C3. Then in C3 you can re-add JS code using scripting.

Tutorial on converting Spritefont+ to C3 Spritefont:

construct.net/en/tutorials/migrating-spritefont-1305

And you can download LiteTween for C3 here:

github.com/erenertugrul/construct-plugins/tree/master/ported_plugins

Ok, thank you.