Is the word conheça the same in Brazilian and European Portuguese?

Yes

The word "conheça" is identical in meaning, spelling, and grammatical function in both Brazilian and Continental Portuguese. It is the third-person singular (or first-person singular) present subjunctive, and also the imperative form for the pronoun você. The only significant difference is pronunciation. In Brazilian Portuguese, the unstressed vowels are typically more open and clearly articulated. In Continental Portuguese, there is a strong tendency toward vowel reduction, meaning the "e" in "conheça" may sound much more closed or almost disappear, making the word sound more clipped.

Brazilian Portuguese Examples

1. Conheça nossa nova coleção de verão! (Check out our new summer collection!)
2. Espero que você conheça o Rio de Janeiro. (I hope you get to know Rio de Janeiro.)
3. Assim que ele conheça a equipe, começará a trabalhar. (As soon as he meets the team, he will start working.)
4. Conheça as trilhas mais bonitas da região. (Discover the most beautiful trails in the region.)
5. Não deixe que ele conheça o segredo. (Don't let him find out the secret.)

Portuguese (Continental) Examples

1. Conheça a nossa nova coleção de verão! (Check out our new summer collection!)
2. Espero que conheças o Rio de Janeiro. (I hope you get to know Rio de Janeiro. — Using the "tu" form, which is more common in casual speech.)
3. Assim que ele conheça a equipa, começará a trabalhar. (As soon as he meets the team, he will start working. — Using "equipa" instead of "equipe".)
4. Conhece os trilhos mais bonitos da região. (Discover the most beautiful trails in the region. — Using the "tu" form and "trilhos" instead of "trilhas".)
5. Não permitas que ele saiba o segredo. (Don't let him find out the secret. — Using the "tu" form and the verb "saber" to express the idea of finding out information.)