The phrase share of, particularly when preceeded by a pronoun, refers to some amount that is rightfully owed to someone, or expected for someone, like when a pirate talks about his share of the treasure, or a member of a team of bank robbers talks about his share of the cash. However, the expression is often used metaphorically to refer to some unspecified amount. For example, a manager of a failed project might talk about his share of the blame.
In this case, my share of women means that the character has been lucky in love. He hasn't just had two or three girlfriends, he's had several. And when he emphasizes that by humorously adding, "In fact, I've been with like a lot of people's share of women," he means that, whatever number someone's "share of women" would be, you could probably triple that, and that's how many women the character has been with. In other words, he's a self-described Casanova.
So, the expression "I've been with like a lot of people's share of women" is intended to be a humorous way of saying that he has been in a lot of relationships with women, probably mostly short-term relationships. Yet, in spite of all this "experience," he's never felt a lasting, close, affection like Ross has for Rachel.
I've never watched Friends, but I'm guessing that these lines are meant to be both funny and touching at the same time.
I also hear "Also could you bring the file on the Rx accounts?" and the information you have provided is accurate.
The speaker is making a request. She is asking the secretary for the file "on Rx accounts". I also hear "Rx", but I am not convinced that this is correct. It might be some kind of special business lingo, a surname or a fake company name like "Arix Company".
Anyway, the file on X accounts means the file regarding/about X or the file that contains the transactions with X. In X accounts, X is a noun that modifies accounts.
So, the file on Rx accounts likely means the file with the transactions regarding prescriptions. Maybe the speaker runs a pharmaceutical company, for example. If we pretend it's a company name or surname "Arix", then Arix accounts would be accounts regarding the transactions the speaker makes with Mr./Mrs. Arix (or the Arix Company). Think of "Smith" if "Arix" doesn't make sense.
Best Answer
As noted by others, "top billing" refers to being first on a playbill, or more generally a top advertising priority. In this case, though, "top billing" might also mean top pay. The meaning of the sentence might be that when someone needs to kill Batman (Bats) a mercenary would be the best choice.