@leung2019
It should not be too difficult to just go ahead and model your data source yourself to match those columns, add the data source to the Canvas App, and then insert your form in the Canvas App .
There is probably not really a specifically automated solution out there in the particular way you have in mind out there at this time to directly parse an Adobe PDF and convert it to Power Apps form. The reason for this is likely because a Power Apps form is more than just the conversion of the PDF to a "form" - it also consists of a live connection to a "data source" - which means it involves modeling on the data store side as well. On the other hand, if someone else on this forum is aware of such a solution, please chime in here.
However, in case you were interested in such a solution, please provide the following information:
1) Which data source would you be using in this case?
2) What is a pattern of the PDF? Could you provide two or three different PDF's with sample, fake information with just a few columns and what they should look like and then what should they come in converted as with screenshot of the corresponding sample fake/mock Power Apps Form in Canvas App?
3) If it were a little bit less difficult to have this automated solution do it where instead of a Data Source, the conversion came in as just the Power Apps Form and Mock Collections only, would you still be interested in it? Note that if it were done this way, the mock Collections would be "stub" and likely need to be replaced with a Data Source created manually just like you would without the solution, the only thing it would do is slightly guide you only.
4) Let's suppose it was Dataverse that was the data source in #1. Would the solution need to also create all the Tables and Columns for you automatically as well in the underlying data source, and then also to hook this data source into the app and then also create the form and select the correct columns? Or, would the columns have to be created first manually in the way you were thinking in the data source, and those provided in the PDF must simply match one of columns in an existing Table?
5) If #4 above is that it must create the columns, does it have to support to create Tables for you automatically as well and also create all the relationships between Tables for you as well without any manual intervention at all? Even if it doesn't, does it have to be able to know about such existing relationship and if so, how would this be indicated exactly or inferred upon from the provided PDF?
6) In your mind. does the concept of #5 above have to apply to the solution even if it were modeled in mock "stub" local collections only? (which means, it would have to be so smart as to make multiple inline Collections, and have fields where one corresponds to the other and imitate a 1:N or N:1 relationship).
There are many considerations about such a solution, the above just being part of it, and in most cases, just modeling that data yourself would take much less time and result in a much more optimized, customized, and much more correct experience for you compared to using even a sophisticated solution that automated this. One reason for this could be because the expression in the static format of the Tables, columns and possibly relationships, from the automated solution must be reverse-engineered and inferred / derived upon to create a back-end data store. Your original question implies this one way or another, whether you are aware of it or not. This conversion to a data model by this kind of inference, may actually result in a sub-optimal or even incorrect model at the data store level.
So for this reason, and for all the other reasons above - even if such a solution were to exist, I would actually recommend that if possible, you were to not use it at all for most production scenarios.
In the case that there is very strong interest about this kind of solution nonetheless, please check about the questions above as it may help advise you on a potential solution to this in the specific way you want - though note, that solution may end up being quite complex. To create such a solution would likely be a somewhat large undertaking, the questions above are intended to clarify the specific scope and usage of the solution you have in mind for this sort of endeavor.
