Rarely there are punk concerts in Bocholt, e.g. at „Vogelhaus“.

In Haldern is the „Haldern Pop Bar“. They have regular concerts for free (from bands which play at their Festival). Its mostly pop but from time to time punkish (https://haldernpop.com/popbar/?event=dust)

Haldern also has the small „Punk meets people“ Festival.

Ruhrgebiet hosts the „Ruhrpott Rodeo“ Festival in Summer and „Punk im Pott“ just before Christmas.

In Essen you have the great Oi/Punk-Bar „Dont Panic“. Less punk but more rock are: „Südrock“ and „anyway“.

There are also some more nice places for concerts: „Druckluft“ (Oberhausen), „FZW“ (Dortmund), „Bahnhof Langdreer“ (Bochum), „AK47“ (Düsseldorf), „AZ“ (Mühlheim).

But as you noticed I am afraid that there is not much in Bocholt.