Do you have any clue about the password if not then it's impossible to recover funds, you can try to brute force the password if you still remember some part of your password or have very close guess about it? If the wallet has money then it worth a try. Let me know, I can help you with that.
Is there any way to check how many BTC i have on wallet ?
2) if i linked phone number can help me ?
1). If you have your bitcoin address/es, You can check it on any blockexplorer e.g. blocktrail, blockchain.info
2). No, Only your 12 word recovery phrase or your private keys can help you access your account again otherwise consider it lost.
*If you have your recovery phrase, enter it here:
https://blockchain.info/wallet/#/recover