How to change pgAdmin 4 to display rows retrieved and runtime?
It's kind of a shame that there is no good solution to this. I found that adding EXPLAIN ANALYZE to the beginning of my query will display results. Some documentation can be found here.

Example:

EXPLAIN ANALYZE
select * from schema.my_table limit 1000 


Yields:

"Limit  (cost=0.00..168.48 rows=1000 width=2644) (actual time=0.048..5.214 rows=1000 loops=1)"
"Append  (cost=0.00..13935338.46 rows=82710326 width=2644) (actual time=0.045..4.880 rows=1000 loops=1)"
"Seq Scan on event_analysis_vw  (cost=0.00..459263.46 rows=3764446 width=3186) (actual time=0.040..4.579 rows=1000 loops=1)"
"Seq Scan on dva_event_analysis_field  (cost=0.00..6640119.59 rows=43856549 width=2623) (never executed)"
"Filter: (is_deleted IS NULL)"
"Seq Scan on dva_event_analysis_field_archived  (cost=0.00..6046496.61 rows=35089331 width=2612) (never executed)"
"Filter: (is_deleted IS NULL)"
"Total runtime: 5.977 ms"