Twitter assigns a unique ID to each account while it is created which is known as the “User ID.” This ID is nothing but the number of your Twitter account.
If you want to find your User ID, then here are the steps:
Go to Twitter.
Hit the profile picture at the top which you can find between “Search Box” and “Tweet” button.
Hit “Settings and privacy” option.
Now, besides “Username,” you can see your user ID. In our instance, the user ID is 3387694573.
Open Twitter app.
Hit the profile picture at the top and then tap “Settings and privacy.”
Now, hit Account > Your Twitter data > Account.
Enter your Twitter account password and then tap “Confirm” button.
Now, under the “Username,” you can see your user ID. In our instance, it is 3379025724.