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

Yes

The word "escolheu" is identical in meaning, grammar, and spelling in both Brazilian and Continental Portuguese. The only difference lies in pronunciation. In Brazilian Portuguese, vowels are typically more open and clearly articulated. In Continental Portuguese, unstressed vowels often undergo "vowel reduction," meaning they are pronounced more closed or can even become nearly silent (for example, the "e" in the middle of words is often much more subtle or swallowed in Portugal).

Brazilian Portuguese Examples

1. Ele escolheu o carro azul. (He chose the blue car.)
2. Ela escolheu o vestido mais caro. (She chose the most expensive dress.)
3. Meu filho escolheu ficar em casa. (My son chose to stay home.)
4. Quem escolheu este cardápio? (Who chose this menu?)
5. Ele escolheu o caminho mais curto. (He chose the shortest path.)

Continental Portuguese Examples

1. Ele escolheu o carro azul. (He chose the blue car.)
2. Ela escolheu o vestido mais caro. (She chose the most expensive dress.)
3. O meu filho escolheu ficar em casa. (My son chose to stay home.)
4. Quem escolheu esta ementa? (Who chose this menu?)
5. Ele escolheu o caminho mais curto. (He chose the shortest path.)