The Asia Cup cricket tournament matches are typically played in the Twenty20 International (T20I) format, which consists of 20 overs per side. Specifically, the 2020 Asia Cup and subsequent editions have been held as T20 matches, where each team plays a maximum of 20 overs in their innings. Therefore, in the Asia Cup 2020 and recent editions, each match has 20 overs per innings. This applies to all teams playing in the tournament. If the question refers to the 20 overs format in the 2020 Asia Cup or generally how many overs are played in an Asia Cup T20 match, the answer is 20 overs per innings.