English is useful in every country, in that case, yeah...Many people go to Belgium seeking for jobs and learning a foreign language as English could be a must

Lots of people in Belgium speak english, varying from excellent to staincoalin english.

If you want to work there, and be more than a tourist, definitely learn French or Dutch

If you're just visiting, you'll be fine with just English.

If you're hoping to study there, you'll need a little Flemish and/or French.

planning to work . 2500euro is enough to leave there.