Yes it does. It matters for impeachment. While the criteria for impeachment is entirely up to the House's subjective majority opinion, it's a lot easier to sell "high crimes and misdemeanors" if you actually have strong evidence of high crimes and misdemeanors. A lot easier to sell to your fellow congressmen, and to the public at large. Hell, if the evidence is clear enough, and widely published, the public at large will be asking you to impeach.
I predict that next, a House subcommittee will review the full Mueller report. They'll refer it to the full committee... and the full committee will recommend no action, because there's nothing in the report to hang an impeachment on.
I also predict that along the way there will be plenty of grandstanding by Democrat committee members, implying that redactions in the report are suspicious, that the report itself is unreliable (because it's not saying what we wish it said), etc.