"有入场的资格" can be translated into English as "have the qualification for admission" or "be eligible for entry".
"Have the qualification for admission" emphasizes that one possesses the necessary credentials or requirements to be allowed in.
"Be eligible for entry" is more concise and directly conveys the idea of meeting the criteria for entering a place or event.
Both expressions are commonly used and can be chosen based on the specific context and tone desired.