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 (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.) There's no limit as to how much you can send to, or spend from either type.