If u go to the gym, try to find at the locker room any muscle dude who seems playful and talkative to others, especially if he's of those who gets shirtless and pantless when asked about advice or posing, they'll likely at least say no in a very friendly manner if they are not into it. Look for dudes who go naked to the sauna or go in Speedos or very short swimsuits. For guys who seem very touchy with themselves and seem to be looking everywhere. I've gotten more than muscle worship for that.
Another way to get easy muscle worship is just to approach any big guy and ask them about advice. Compliment them a bit and tell them if they can flex arms, pec pop or do a vacuum. They'll 100% let u touch bicep. If you feel they are more open minded/relaxed, you can try to touch their abs or pecs without asking if you do it in a gentle non-sexual manner (like pretending to be really impressed about their size, more in the "wow dude this is impressive").