Yes, you have to synchronize your wallet. But there is a way to make it much faster. Here is the
link to official monero "wiki".
Main thing is to download blockchain manually by this link
https://downloads.getmonero.org/blockchain.raw.
After this you have to import it to the wallet, this process depends on your OS - it's described at provided link.
Soon after wallet finishes import process you have to sync the last blocks. And here is one more
hint to speed up it.
There is one more method, even more easy.
You can just use online wallet:
https://mymonero.com/It is listed here on official website:
https://getmonero.org/downloads/