It seems there have been delays getting the polling cards delivered. This will usually tell you where your local polling station is and is important as you can only vote in your allocated station.
If your card does not arrive then you can find out your local polling station on the government website.
Don’t forget you will need a valid photo ID even if you have your polling card.
In 2019 there were 15.5 million non-voters, that’s more potential votes than any one party received. If you are wondering why you should vote, then there is a non-biased information site about parliament, how to vote and the reasons for voting.