How will Donald Trump's flagship bill impact the US economy?

From youtube.com/bbcnews

The US Congress has passed Donald Trump's tax and spending bill in a significant and hard-fought victory for the president and his domestic agenda. It's a bill that's sparked intense debate, with the Congressional Budget Office estimating it could add $3.3tn (£2.4tn) to federal deficits over the next 10 years. The US president however said: "This is going to be a great bill for the country." So what could Trumps "big, beautiful bill" do to the US national debt?