Most women like to give head, especially if she likes you; however, some women don't wanna give head but don't mind receiving it either.
The thing is that, understandably, women reserve certain sexual gestures for particular men they can see themselves with in terms of relationships and partnerships.
Attraction plays a role but it comes down to whether they see you as someone serious. For example, anal sex is something a lot of women will reserve for relationships involving committed boyfriends and husbands but not some dude they're just linking up with for the moment. When it comes to certain sexual gestures, it's all about trust and compatibility.