Scots has a distinctive grammar, similar but not the same as Scottish English. Scots speakers are often unaware of its existence, but may still use it every day!
Scots Grammar Broonie was one of the first grammars specifically for bairns. It contains grammar worksheets. The second edition is still available as a print-on-demand title from EUP, or from Amazon, Abebooks etc.
Modren Scots Grammar is written in Scots, again for bairns.
For adults, the scotslanguage.info Scots Learners’ Grammar is a good place to start.
Wir Ain Leid from Scots Online covers the same ground in more detail.
Michael Dempster has produced a fascinating series of 8 videos on the grammar of (West Central) spoken Scots.
The overlap with the written grammars above is remarkable.