I have made a start, but as you have scanned and posted the whole page, the image is not of high enough resolution to zoom in enough to make out exact letters in some of the words - it becomes pixalated very quickly.
What I suggest you do is crop the image - say the first paragraph, and post that on its own, getting it as near to the 500 KB limit allowed on here.
Then do the same with the second paragraph. etc
On the second page, only the first paragraph relates to George Campbell.
Testament datives were concerned with, mostly, money, and the second and third paragraphs will be to do with any debts he owes, and any owing to him.
It is unlikey you will find much genealogical information in it - although if it is your ancestor, it will be very interesting all the same.
By the way, you have posted an entire document, which is contrary to Rootschat policy - it contravenes copyright I believe. You may get it removed by the moderators! Reason number 2 to do a paragraph at a time.
The testament dative and Inventare of the goodis
debts and sommes of money quhilles porteint to umquille
George Campbell in over ? within the paroche of L?
the tyme of his deceas who deceast in the moneth of may 1679
which was fathfullie maid and givin up be Johne Campbell ?
? to the defunct and exe(cutor) dative surrogat In place of Johne
James (?) pro(curat)or fiscall of the commissariiat of Glasgow wha is
exe dative ......
the defuncts goods geir & debtis ........
quhilles - which
porteint - pertain, relate
umquille - late, deceased
paroche - parish
wha - who