Ashworth works in abstraction, which means you're not getting landscapes of the coast outside — you're getting something that requires a little more standing-still time. The live music component makes this a two-reason trip rather than one, which is the only math that justifies leaving the city on a weekend.
Pacifica is about 30 minutes south on Highway 1 or Skyline depending on where you're coming from. There's no BART option here — this is a car or rideshare trip. Street parking in Pacifica is generally easier than anything you'll find in SF, so don't stress it. The drive down 1 along the coast is part of the deal.
Admission is free. No age restriction noted. Bring cash if there's merch or if the venue has a bar situation — smaller spaces often run card-reader-optional.
If you have two hours: spend 45 minutes with the work, catch one set of live music, and leave enough daylight to stop at a Pacifica beach pullout on the way back. That's the version of this afternoon that justifies the commute.