It depends on the range. Some ranges allow them and some don’t. It’s typically up to the range owner or manager to make that decision.
Some people choose to use suppressors because they’re quieter, and it can be easier to teach new shooters when they’re not constantly having to wear ear protection. However, some people feel that using a suppressor takes away from the experience of shooting a gun, and it’s also more expensive to buy and maintain a suppressor. So it just comes down to personal preference.
If you’re interested in using a suppressor at a range, you should check with the management beforehand to see if it’s allowed. Some ranges have special classes or events where suppressors are allowed, so it’s always best to check ahead of time.