withdrew for the first time on bitcoin.... the sportsbook (HS) says that it has been paid (thats what the request says) but it's not showing up in my bitcoin... should I call or does it generally take a little time?
You did it right. It will take some time for the transaction to confirm.
If you go here: https://blockchain.info/
You can paste where you had them send the funds and it will show whether the transaction has been confirmed or not. 3 Confirmations and you should have a notification that you received funds.