Marc Thiessen lists the accomplishments of President Trump over his term so far.
When Trump says he will do something, you can take it to the bank. Yes, he takes liberties with the truth. But unlike his predecessor, he did not pass his signature legislative achievement on the basis of a lie ("If you like your health care plan, you can keep it") -- which is clearly worse than falsely bragging that your tax cut is the biggest ever.
The fact is, in his first two years, Trump has compiled a remarkable record of presidential promise-keeping. He'd probably say it's the best in history -- which may or may not end up being true. It's too soon to tell.