Macro to copy date to specific sheet based on data from another sheet.

Okay, quick update. I've managed to get it to select the sheet. it's now stopping at this line

testRow = Nametest.Cells(20, 2).End(x1Up).Row

I wasn't entirely sure how to code this but what I'm trying to do is. On 'Nametest sheet' fine the next empty row between rows 20-29 then copy the data to there.
Would anyone have any idea how to write this properly?