Can I send large amount of BTC (from 3 BTC) on bc1 addresses or better to use segwit (that start with 3) addresses?
Thanx in advance
I may be misunderstanding your question, or you may be misunderstanding which wallets are segwit. Addresses that start with bc1 are native segwit (p2wpkh,) and addresses that start with 3 are nested segwit (p2wpkh to p2sh.) Both are cheaper on fees (by small margin) when spending, and both are fine to use.
Some web wallets, exchanges, and other services can't send to a native segwit (bc1) wallet, so if you use those services often you may want to use a nested segwit wallet (3) instead. There's no limit as to how much you can send to, or spend from either type.