Telegram is usually a hotbed of fraud, there can be many fake bot imitations resembling the original, so you have to be careful, never be tempted by unreasonable offers and always verify correctly before doing it.
The best way to avoid that is to be active in the community channel so you'll get the latest updates about the project you're working on, especially on airdrops; there will be people who will do an investigation and expose the project and, of course, check the forums for any warning sign.
You are investing a lot of your time and effort, so it's important that you know very well the project you're working on, where the money and the hype are, and expect the scammers to also be there.