This is the 17485th most frequent Russian word.
топовая
"Top-notch" or "best."
Here, 'топовая' is used as an adjective to describe the phone model as "top-notch," meaning of the highest quality or most popular.
Эта модель телефона считается топовой на рынке.
This phone model is considered top-notch on the market.
In this sentence, 'топовая' is expressing that the shoe collection is outstanding or distinguished.
У неё топовая коллекция обуви, собранная со всего мира.
She has a top-notch shoe collection gathered from all over the world.
Here, 'топовый' (masculine form of 'топовая') is used to indicate that the restaurant is one of the best or most highly recommended.