First of all, you did a big mistake, buying directly from a broker is the worst thing that you can do.
You are not buying bitcoins by that way, you are just "purchasing bitcoin contracts" just like a version of what the Futures of the CME, but in an online version
And yes, you have just deposited money in the broker (i guess) and you are going to buy it at the moment that you execute your order, long or short.
I bought a small amount of bitcoin from a broker 2 hours ago when the price was $14.7k with a payment method that takes 1-5 days to process.
You will probably get scammed in there, if it has a lot of bad reviews, then it means that it is a big scam.
I am sorry.
I purchased from CoinJar.com.au.