Although it's an urban myth that Mao stated that it was too early to tell what the effects of the French Revolution were, it's very early days to make an objective valuation about Brexit in this unusual short-term.
From a personal perspective, a friend of mine works in a food export business which is now laying off staff due to the bureacracy, difficulties and expense of exporting perishable food to the EU - and that's after they lost a quite a few EU citizens who were members of staff in the warehouse and decamped earlier this year due to Brexit. It seems that the company is either going to relocate in The Netherlands or go out of business. A singular anecdote and meaningless in the great scheme of things perhaps.
I also spend one weekend a month walking the South West Coast Path and staff shortages in pubs, cafés and restaurants are commonplace. It's not totally clear as to how much that problem is down to Covid and/or Brexit respectively but let's wait and see.